Why water hyacinth floats in water ?

by

1 Answer

Answer :

: There is a lot of air chamber between the stalk and leaves of Kachuri drink which is why it floats in water.
by

Related questions

What kind of stem can be seen in water hyacinth ?

Description : What kind of stem can be seen in water hyacinth ?

Last Answer : Offset stems can be seen in water hyacinth.

How to see water hyacinth flowers ?

Description : How to see water hyacinth flowers ?

Last Answer : Small and light in the form of water-pollinated flowers.

In what year was water hyacinth brought to Bangladesh ?

Last Answer : : In the late nineteenth century, an orchid-loving tourist liked water hyacinth flowers so much that he brought them with him when he came to this country from Brazil. Roar Bengali

The rapidly growing mass of phytoplankton coveting the surface water of a lake or pond is known as – (1) Eutrophication (2) Water bloom (3) Water pollution (4) Water hyacinth

Description : The rapidly growing mass of phytoplankton coveting the surface water of a lake or pond is known as – (1) Eutrophication (2) Water bloom (3) Water pollution (4) Water hyacinth

Last Answer : (1) Eutrophication Explanation: Eutrophication is the ecosystem response to the addition of artificial or natural substances, such as nitrates and phosphates, through fertilizers or sewage, to an aquatic ... increase of phytoplankton in a water body as a response to increased levels of nutrients.

Which of the following weeds has been found effective in checking water pollution caused by industrial affluents? (1) Water hyacinth (2) Elephant Grass (3) Parthenium (4) Both (2) and (3)

Description : Which of the following weeds has been found effective in checking water pollution caused by industrial affluents? (1) Water hyacinth (2) Elephant Grass (3) Parthenium (4) Both (2) and (3)

Last Answer : (1) Water hyacinth Explanation: Plants that are resistant to crude oil toxicity such as black poplar and willows, as well as miscanthus grass (elephant grass) have been found to ... oliefera seeds and Parthenium hysterophorus plants are effective for the removal of industrial p011utants in water.

Which of the following weeds has been found useful to check water pollution caused by industrial effluents? (1) Partheniurn (2) Elephant grass (3) Water hyacinth (4) Both (1) and (2)

Description : Which of the following weeds has been found useful to check water pollution caused by industrial effluents? (1) Partheniurn (2) Elephant grass (3) Water hyacinth (4) Both (1) and (2)

Last Answer : (4) Both (1) and (2) Explanation: Parthenium and Elephant grass are useful to check water pollution caused by industrial effluents.

Which of the following weeds has been found useful to check water pollution caused by industrial affluents? (1) Parthenium (2) Elephant grass (3) Water hyacinth (4) Both (1) and (2) above

Description : Which of the following weeds has been found useful to check water pollution caused by industrial affluents? (1) Parthenium (2) Elephant grass (3) Water hyacinth (4) Both (1) and (2) above

Last Answer : (3) Water hyacinth Explanation: Around the world, there is an increasing trend in areas of land, surface waters and groundwater affected by contamination from industrial, military and agricultural activities due to either ignorance, lack of vision, or carelessness.

Which one of the following pairs of organisms are exotic species introduced in India? (a) Lantana camara, water hyacinth (b) Water hyacinth, Prosopis cinereria (c) Nile perch, Ficus religiosa (d) Ficus religiosa, Lantana camara

Description : Which one of the following pairs of organisms are exotic species introduced in India? (a) Lantana camara, water hyacinth (b) Water hyacinth, Prosopis cinereria (c) Nile perch, Ficus religiosa (d) Ficus religiosa, Lantana camara

Last Answer : (a) Lantana camara, water hyacinth

Pollination in water hyacinth and water lily is brought about by the agency of (a) water (b) insects or wind (c) birds (d) bats.

Description : Pollination in water hyacinth and water lily is brought about by the agency of (a) water (b) insects or wind (c) birds (d) bats.

Last Answer : b) insects or wind

In water hyacinth and water lily, pollination takes place by (a) insects or wind (b) water currents only (c) wind and water (d) insects and water

Description : In water hyacinth and water lily, pollination takes place by (a) insects or wind (b) water currents only (c) wind and water (d) insects and water

Last Answer : (a) insects or wind

Which one of the following pairs is wrongly matched while the remaining three are correct? (a) Penicillium – Conidia (b) Water hyacinth – Runner (c) Bryophyllum – Leaf buds (d) Agave – Bulbils

Description : Which one of the following pairs is wrongly matched while the remaining three are correct? (a) Penicillium – Conidia (b) Water hyacinth – Runner (c) Bryophyllum – Leaf buds (d) Agave – Bulbils

Last Answer : (b) Water hyacinth – Runner

Which of the following pairs is not correctly matched? Mode of reproduction Example (a) Binary fission Sargassum (b) Conidia Penicillium (c) Offset Water hyacinth (d) Rhizome Banana

Description : Which of the following pairs is not correctly matched? Mode of reproduction Example (a) Binary fission Sargassum (b) Conidia Penicillium (c) Offset Water hyacinth (d) Rhizome Banana

Last Answer : a) Binary fission Sargassum

Which one of the following statements is not correct? (a) Offspring produced by the asexual reproduction are called clone. (b) Microscopic, motile, asexual reproductive structures are called zoospores. (c) In potato, banana and ginger, the plantlets arise from the internodes present in the modified stem. (d) Water hyacinth, growing in the standing water, drains oxygen from water that leads to the death of fishes.

Description : Which one of the following statements is not correct? (a) Offspring produced by the asexual reproduction are called clone. (b) Microscopic, motile, asexual reproductive structures are called zoospores. ( ... in the standing water, drains oxygen from water that leads to the death of fishes.

Last Answer : (c) In potato, banana and ginger, the plantlets arise from the internodes present in the modified stem.

Native of water hyacinth is a). Australia b). Brazil c). India d). China

Description : Native of water hyacinth is a). Australia b). Brazil c). India d). China

Last Answer : b). Brazil

A weed brought as ornamental a). Water hyacinth b). Lantana c). Both a and b d). None of these

Description : A weed brought as ornamental a). Water hyacinth b). Lantana c). Both a and b d). None of these

Last Answer : c). Both a and b

A troublesome weed of water body a). Water lilly b). Lotus (Nelumbo sp) c). Water hyacinth d). All the above

Description : A troublesome weed of water body a). Water lilly b). Lotus (Nelumbo sp) c). Water hyacinth d). All the above

Last Answer : d). All the above

.Which weed is considered as biopesti cide and severely inhibit the growth of water hyacinth? a). Parthenium b). Echinochloa c). Cuscuta d). Lantana

Description : .Which weed is considered as biopesti cide and severely inhibit the growth of water hyacinth? a). Parthenium b). Echinochloa c). Cuscuta d). Lantana

Last Answer : c). Cuscuta

Water blooms are formed by a) Lemna b) Hydrilla c) Water hyacinth d) Planktonic algae.

Description : Water blooms are formed by a) Lemna b) Hydrilla c) Water hyacinth d) Planktonic algae.

Last Answer : d) Planktonic algae.

Which of the following weeds has been found effective in checking water pollution caused by industrial affluents? (1) Water hyacinth (2) Elephant Grass (3) Parthenium (4) Both (2) and (3)

Description : Which of the following weeds has been found effective in checking water pollution caused by industrial affluents? (1) Water hyacinth (2) Elephant Grass (3) Parthenium (4) Both (2) and (3)

Last Answer : Both (2) and (3)

Which of the following weeds has been found useful to check water pollution caused by industrial affluents ? (1) Parthenium (2) Elephant grass (3) Water hyacinth (4) Both (1) and (2) above

Description : Which of the following weeds has been found useful to check water pollution caused by industrial affluents ? (1) Parthenium (2) Elephant grass (3) Water hyacinth (4) Both (1) and (2) above

Last Answer : Water hyacinth

The rapidly growing mass of phytoplankton covering the surface water of a lake or pond is known as : (1) Eutrophication (2) Water bloom (3) Water pollution (4) Water hyacinth

Description : The rapidly growing mass of phytoplankton covering the surface water of a lake or pond is known as : (1) Eutrophication (2) Water bloom (3) Water pollution (4) Water hyacinth

Last Answer : Eutrophication

is hyacinth bean vine poisonous.if not, do u eat the pod or pea

Description : is hyacinth bean vine poisonous.if not, do u eat the pod or pea

Last Answer : Need Answer

how to deadhead a Hyacinth

Description : how to deadhead a Hyacinth

Last Answer : just cut the dead bloom off..................leave the leaves so the sun can give the bulb energy for next years flowers.

what causes hyacinth leaves to go yellow

Description : what causes hyacinth leaves to go yellow

Last Answer : Need Answer

Dolichos - Hyacinth Bean (Dol'ichos)

Description : Dolichos - Hyacinth Bean (Dol'ichos)

Last Answer : DESCRIPTION: This is a large group of tropical vines that grow 10 to 30 feet high. The most commonly grown kind is D. Lablab, the Hyacinth Bean. This pretty vine has lavender-purple or white, fragrant ... indoors in pots and set out when the weather is settled. VARIETIES: D. Lablab; D. lignosus.

A piece of wetted wood just floats in water. When placed in an oil of specific gravity 0.75, it will a.Float with upside down b.Sink c.Float for sometime and then sink d.Float with 3/4 of volume above the liquid surface e.Float with 1/4 of volume above the liquid level

Description : A piece of wetted wood just floats in water. When placed in an oil of specific gravity 0.75, it will a.Float with upside down b.Sink c.Float for sometime and then sink d.Float with 3/4 of volume above the liquid surface e.Float with 1/4 of volume above the liquid level

Last Answer : b. Sink

A cube of wood supporting 200 gm mass just floats in water. When the mass is removed, the cube rises by 2 cm the side of the cube will be a.5 cm b.10 cm c.12.5 cm d.20 cm e.15 cm

Description : A cube of wood supporting 200 gm mass just floats in water. When the mass is removed, the cube rises by 2 cm the side of the cube will be a.5 cm b.10 cm c.12.5 cm d.20 cm e.15 cm

Last Answer : a. 5 cm

Explain in one word "that which floats in water" ?

Description : Explain in one word "that which floats in water" ?

Last Answer : What aquatic - "Aquatic".

A body floats on water and also on an oil of density `1.25`. Which of the following is/are true?

Description : A body floats on water and also on an oil of density `1.25`. Which of the following is/are true?

Last Answer : A body floats on water and also on an oil of density `1.25`. Which of the following is/are true? ... need 1.25 times load in case of oil than in case

Lithium floats an water while sodium floats and catches fire when put in water.

Description : Lithium floats an water while sodium floats and catches fire when put in water.

Last Answer : Explain : Lithium floats an water while sodium floats and catches fire when put in water.

What Oil floats on water because it is denser true or false?

Description : What Oil floats on water because it is denser true or false?

Last Answer : Oil floats on water because water is denser than oil.

If an object floats the volume of the displacement water is equal to the volume of the whole object?

Description : If an object floats the volume of the displacement water is equal to the volume of the whole object?

Last Answer : False - Apex

Water that floats in the sky condenses to form these?

Description : Water that floats in the sky condenses to form these?

Last Answer : River

A body partially floats in water when (a) The volume of the displaced liquid is equal to the volume of the body (b) The volume of the displaced liquid is greater than the volume of the body (c) The weight of the displaced water is equal to the weight of the body (d) The weight of the displaced water is greater than the weight of the body

Description : A body partially floats in water when (a) The volume of the displaced liquid is equal to the volume of the body (b) The volume of the displaced liquid is greater than the volume of the body (c) ... the weight of the body (d) The weight of the displaced water is greater than the weight of the body

Last Answer : Ans:(a)

A solid needle placed horizontally on the surface of the water floats due to (a) Surface tension (b) Capillary action (c) Cohesion (d) Adhesion

Description : A solid needle placed horizontally on the surface of the water floats due to (a) Surface tension (b) Capillary action (c) Cohesion (d) Adhesion

Last Answer : Ans:(a)

A fresh egg sinks in pure water but floats in salty water. This is because (a) Saline water is denser than pure water (b) Saline water is lighter than pure water (c) The viscosity of saline water is higher than that of pure water (d) The surface tension of saline water is lower than that of pure water

Description : A fresh egg sinks in pure water but floats in salty water. This is because (a) Saline water is denser than pure water (b) Saline water is lighter than pure water (c) The viscosity of saline water ... than that of pure water (d) The surface tension of saline water is lower than that of pure water

Last Answer : Ans:(a)

A cube of wood supporting a block of mass 200 grains just floats in water. When the block is removed, the cube rises by 2 cm. What is the size of the cube? (a) 6 cm (b) 8 cm (c) 10 cm (d) 12 cm

Description : A cube of wood supporting a block of mass 200 grains just floats in water. When the block is removed, the cube rises by 2 cm. What is the size of the cube? (a) 6 cm (b) 8 cm (c) 10 cm (d) 12 cm

Last Answer : Ans:(c)

When a ship floats on water (a) It displaces no water (b) The mass of water displaced is more than the mass of the ship (c) The mass of water displaced is equal to the mass of the ship (d) The mass of water displaced is less than the mass of the ship

Description : When a ship floats on water (a) It displaces no water (b) The mass of water displaced is more than the mass of the ship (c) The mass of water displaced is equal to the mass of the ship (d) The mass of water displaced is less than the mass of the ship

Last Answer : Ans:(c)

A cylindrical block of wood floats in water with four-fifth of its volume submerged in water. The relative density of wood is (a) 0.8 (b) 0.9 (c) 1.0 (d) 1.2

Description : A cylindrical block of wood floats in water with four-fifth of its volume submerged in water. The relative density of wood is (a) 0.8 (b) 0.9 (c) 1.0 (d) 1.2

Last Answer : Ans:(a)

(4) water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn Explanation: Water is not effective in extinguishing a fire caused by petrol because water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn. The specific gravity (or relative density) of gasoline ranges from 0.71-0.77 kg/l (719.7 kg/m3) while the specific gravity of water is 1000 kg/m3 and that is why gasoline or petrol floats on the upper surface of the water. Water cannot generally be used to extinguish a gasoline fire, unless used in a fine mist.

Description : (4) water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn Explanation: Water is not effective in extinguishing a fire caused by petrol because water and ... . Water cannot generally be used to extinguish a gasoline fire, unless used in a fine mist.

Last Answer : "All the four quantum numbers of two electrons in an atom are not the same." It is the law of (1) Hund’s (2) Exclusion Principle of Pauli (3) Uncertainty Principle of Giesenberg (4) Avogadro’s law

An egg sinks in soft water but floats in a concentrated solution of salt because – (1) Egg absorbs salt from the solution and expands (2) Albumin dissolves in salt solution and egg becomes lighter (3) The density of salt solution exceeds the density of eggs (4) Water has high surface tension

Description : An egg sinks in soft water but floats in a concentrated solution of salt because – (1) Egg absorbs salt from the solution and expands (2) Albumin dissolves in salt solution and egg becomes lighter (3) The density of salt solution exceeds the density of eggs (4) Water has high surface tension

Last Answer : (3) The density of salt solution exceeds the density of eggs Explanation: Following the density principle, the density of the egg compared to the density of the tap water is lesser (the density principle ... and that is why an egg sinks in soft water but floats in a concentrated solution of salt.

That an Iron ship floats in water but an Iron ball sinks, is an example of - (1) Newton's second law (2) Pascal's law (3) Archimedes Principle (4) Dalton's law

Description : That an Iron ship floats in water but an Iron ball sinks, is an example of - (1) Newton's second law (2) Pascal's law (3) Archimedes Principle (4) Dalton's law

Last Answer : (3) Archimedes Principle Explanation: The floating of an iron ship in water is an example of Archimedes principle. Archimedes' principle states that an object floats on water if the weight of the water ... . Since the average density of the ship as a whole is less than the density of water.

A needle or a pin floats on the surface of water because of – (1) Surface tension (2) Surface energy (3) Viscosity (4) Adhesive force

Description : A needle or a pin floats on the surface of water because of – (1) Surface tension (2) Surface energy (3) Viscosity (4) Adhesive force

Last Answer : (1) Surface tension Explanation: The pin or needle floats because of an invisible elastic skin on the surface of the water. This elastic skin is called surface tension. Surface tension of the water leads to forces strong enough to support the needle's weight.

A solid needle placed horizon-tally on the surface of the water floats due to – (1) capillary action (2) water pressure (3) surface tension of water (4) viscosity of water

Description : A solid needle placed horizon-tally on the surface of the water floats due to – (1) capillary action (2) water pressure (3) surface tension of water (4) viscosity of water

Last Answer : (3) surface tension of water Explanation: A solid needle placed horizontally on the surface of water floats due to surface tension of water.

An ice block with a piece of lead embedded in it floats in water. If ice melts the water level – (1) Rises (2) Falls (3) Remains same (4) Falls first and them rises

Description : An ice block with a piece of lead embedded in it floats in water. If ice melts the water level – (1) Rises (2) Falls (3) Remains same (4) Falls first and them rises

Last Answer : (2) Falls

When you check the specific gravity of the battery electrolyte with a hydrometer, it should be kept in mind that ____________. A. the battery is fully charged when the indicator floats low in the electrolyte B. any water that has been previously added to the cells will dilute the solution and give a false reading C. a hydrometer reading is inaccurate if taken immediately after water is added to the cell D. temperature has no effect on hydrometer readings

Description : When you check the specific gravity of the battery electrolyte with a hydrometer, it should be kept in mind that ____________. A. the battery is fully charged when the indicator floats low in ... taken immediately after water is added to the cell D. temperature has no effect on hydrometer readings

Last Answer : Answer: C

Which stone floats on water? A. Pumice stone (Answer) B. Lime stone C. Basalt stone D. Quartzite stone

Description : Which stone floats on water? A. Pumice stone (Answer) B. Lime stone C. Basalt stone D. Quartzite stone

Last Answer : A. Pumice stone (Answer)

A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is (A) 3.53 kN (B) 33.3 kN (C) 35.3 kN (D) None of these

Description : A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is (A) 3.53 kN (B) 33.3 kN (C) 35.3 kN (D) None of these

Last Answer : Answer: Option C

A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is (A) 0.83 (B) 0.6 (C) 0.4 (D) 0.3

Description : A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is (A) 0.83 (B) 0.6 (C) 0.4 (D) 0.3

Last Answer : Answer: Option B