Description : Downward movement of food synthesized in leaves takes place through
Last Answer : Ans. Phloem
Description : The hydrostatic pressure generated within the cell against cell wall as a result of entry of water into it, due to osmosis.
Last Answer : Ans. Turgor pressure
Description : The concept ‘Osmosis’ is given by
Last Answer : Ans. Abbe Nollel
Description : The exchange of gases in the alveoli of the lungs takes place by (a) passive transport (b) active transport (c) osmosis (d) simple diffusion.
Last Answer : d) simple diffusion.
Description : Spindle formation takes place during
Last Answer : Ans. Metaphase 1
Description : Upward translocation of fluid in xylem takes place due to
Last Answer : Ans. Pull of transpiration stream
Description : In which stage, crossing over takes place?
Last Answer : Ans. Pachytene stage
Description : Heat flow in solid/soil takes place mainly through the process of
Last Answer : Ans. Conduction
Description : The process of osmosis is best illustrated by the movement of: a) salts in blood stream. b) oxygen into red blood cells. c) carbon dioxide through stomata. d) water into root hair cells.
Last Answer : ANSWER: D -- WATER INTO ROOT HAIR CELLS.
Description : Osmosis is a. movement of solvent across a semipermeable membrane from an area where the hydrostatic pressure is high to an area where the hydrostatic pressure is low b. movement of solute across a ... area in which it is in high concentration to an area in which it is in low concentration
Last Answer : movement of solvent across a semipermeable membrane from an area in which it is in high concentration to an area in which it is in low concentration
Description : The movement of ions against the concentration gradient will be (a) active transport (b) osmosis (c) diffusion (d) all of the above.
Last Answer : (a) active transport
Description : The random movement of particles in solution towar a uniform distribution is termed: a) osmosis b) repulsion c) diffusion d) facilitated diffusion
Last Answer : ANSWER: C -- DIFFUSION
Description : The element which takes part in the growth and development of plants
Last Answer : Ans. Plant nutrients
Description : Plant takes the nutrient in the form of
Last Answer : Ans. Ions
Description : The movement of nutrient ions and salts along with moving water
Last Answer : Ans. Mass flow
Description : Cooperative Movement (1904) was initiated by
Last Answer : Ans. F. Nicholson
Description : What is the difference between the manner in which movement takes place in a sensitive plant and the movement in our legs ? -Biology-10
Last Answer : Movement in a sensitive (mimosa) plant Movement in legs of a human 1. The leaves of a sensitive plant like mimosa are sensitive to touch. 1. Leg is in control of nerve muscles. 2. It is not ... in a sensitive plant are nastic movement. 4. The movement in our leg is due to voluntary nervous system.
Description : How does the movement of substances takes place in the cell ? -Biology
Last Answer : Some substances like carbon dioxide or oxygen can move across the cell membrane by a process called diffusion.
Description : Pick out the wrong statement. (A) The binary diffusivity in liquids is of the order of 10 -5 cm2 /sec (B) Molecular diffusion in solid is much faster than that in liquids ( ... Poiseuille's law, the permeability decreases with increase in temperature for flow of a gas through a given capillary
Last Answer : (B) Molecular diffusion in solid is much faster than that in liquids
Description : Pick out the wrong statement. (A) Fluid movement under the influence of buoyant forces resulting from change in density takes place in case of natural convection (B) The ratio NNu /NRe . Npr is ... convection to that by conduction (D) The Colburn jH factor for heat transfer is given by Nst Npr
Last Answer : (D) The Colburn jH factor for heat transfer is given by Nst Npr
Last Answer : In conductors conduction of electricity takes place due to movement of electrons only.
Last Answer : The conduction of electricity, in semiconductors, takes place due to movement of electrons and holes.
Description : Solar energy is converted into chemical energy during – (1) Transpiration (2) Photosynthesis (3) Diffusion (4) Osmosis
Last Answer : (2) Photosynthesis Explanation: In photosynthesis, solar energy is converted to chemical energy. The chemical energy is stored in the form of glucose (sugar). Carbon dioxide, water, and sunlight are ... captured from the sun into chemical energy that can be used to fuel the organism's activities.
Description : During osmosis w) Pure solvent diffuses through a membrane but solutes do not. x) Pure solutes diffuse through a membrane but solvent does not. y) Pure solvent and a solution both diffuse at the same time through a membrane. z) Gases diffuse through a membrane into a solution and build up pressure.
Last Answer : ANSWER: W -- PURE SOLVENT DIFFUSES THROUGH A MEMBRANE BUT SOLUTES DO NOT.
Description : Solar energy is converted into chemical energy during (1) Transpiration (2) Photosynthesis (3) Diffusion (4) Osmosis
Last Answer : Photosynthesis
Description : The origin place of mango
Last Answer : Ans. Indo-Burma region
Description : C3 /Dark reaction/Calvin cycle take place in
Last Answer : Ans. Stroma of Chlorophyll
Description : C4 /Light reaction/Hill reaction take place in
Last Answer : Ans. Grana of Chlorophyll
Description : A biochemical process or reaction taking place in a test tube (in lab)
Last Answer : Ans. In vitro
Description : A mechanism of self pollination in which flowers open but only after pollination has take place
Last Answer : Ans. Chasmogamy
Description : The weight of the carbon of air at any given place and time.
Last Answer : Ans. Atmospheric pressure
Description : The instrument able to record almost all meteorological data by desired interval at any time and any place
Last Answer : Ans. Automatic weather station
Description : A condition of atmosphere at a given place at a given time.
Last Answer : Ans. Weather
Description : I currently haul reverse-osmosis filtered water from the grocery store to my house in 1-gallon glass jugs. Is there a better way?
Last Answer : Have a system installed in your house. You will find it cleaner and purer then the stuff you are getting at the store. It does not come cheep. But, how important is your health?
Description : What are the benefits of reverse osmosis systems in purifying water?
Last Answer : Reverse osmosis is a membrane technical filtration method that removes many types of large molecules and ions from solutions by applying pressure to the solution when it is on one side of a selective membrane.
Description : How much does a reverse osmosis water system cost?
Last Answer : You can buy a cheap reverse osmosis water system at most large multi purpose chain retail stores, for example Costco, where an average price for a reverse osmosis system is around 160 dollars.
Description : The process used in the desalination of sea water is (a) osmosis (b) reverse osmosis (c) electrophoresis (d) distillation
Last Answer : Ans:(b)
Description : Which of the following is the treatment of water pollution? (1) Bag house filter (2) Windrow composting (3) Venturi scrubber (4) Reverse Osmosis
Last Answer : (4) Reverse Osmosis Explanation: Reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove ions, molecules, and larger particles from drinking water. It can ... of potable water. It is most commonly known for its use in drinking water purification form.
Description : In plants water is absorbed by the root hairs by a process called: (1) Transpiration (2) Respiration (3) Perspiration (4) Osmosis
Last Answer : (4) Osmosis Explanation: Plants absorb water from their root hairs on the root via osmosis. It is then transported to other parts of the plant. (through the network of xylem vessels) through a combination of capillary action and "transiprational pull".
Description : Excess amount of absorbed water by plants is liberated out by – (1) Evaporation (2) Osmosis (3) Diffusion (4) Transpiration
Last Answer : (4) Transpiration Explanation: Water vapour transpires constantly through pores (stomata) in the surface of plant's leaves.
Description : __________ is the separation technique used for desalination of sea water. (A) Thermal diffusion (B) Reverse osmosis (C) Adsorption (D) Absorption
Last Answer : (B) Reverse osmosis
Description : When water enters in roots due to diffusion, is termed as (a) osmosis (b) passive absorption (c) endocytosis (d) active absorption.
Last Answer : (b) passive absorption
Description : A bottle filled with previously moistened mustard seeds and water was screw capped tightly and kept in a corner. It blew up suddenly after about half an hour. The phenomenon involved is (a) diffusion (b) imbibition (c) osmosis (d) DPD.
Last Answer : b) imbibition
Description : Brackish water which contains mostly dissolved salt, can be purified by the __________ process. (A) Reverse osmosis (B) Sand filter (C) Lime soda (D) Permutit
Last Answer : (A) Reverse osmosis
Description : Reverse osmosis is normally used for the (A) Separation of isotopes of uranium from gaseous uranium hexafluoride (B) Separation of helium from natural gas (C) Desalination of brackish water to produce potable (drinking) water (D) Purification of oxygen
Last Answer : (C) Desalination of brackish water to produce potable (drinking) water
Description : Separation of fresh water from sea water can be done by the __________ operation. (A) Osmosis (B) Reverse osmosis (C) Absorption (D) Adsorption
Description : Which of the following categories of laxatives draw water into the intestines by osmosis? a) Saline agents (milk of magnesia) Saline agents use osmosis to stimulate peristalsis and act within 2 ... by surfactant action on the colonic epithelium, resulting in mixing of aqueous and fatty substances.
Last Answer : a) Saline agents (milk of magnesia) Saline agents use osmosis to stimulate peristalsis and act within 2 hours of consumption.
Description : Oncotic pressure refers to a) the osmotic pressure exerted by proteins. Oncotic pressure is a pulling pressure exerted by proteins, such as albumin. b) the number of dissolved particles contained in a ... . Osmotic pressure is the amount of pressure needed to stop the flow of water by osmosis.
Last Answer : a) the osmotic pressure exerted by proteins. Oncotic pressure is a pulling pressure exerted by proteins, such as albumin.
Description : Water molecules enter plant epidermal cells by: a) osmosis b) active transport c) translocation d) transpiration
Last Answer : ANSWER: A -- OSMOSIS
Last Answer : Reverse Osmosis