Why are the leaves of cactus plants modified into spines? -Biology

Why are the leaves of cactus plants modified into spines? -Biology
by

1 Answer

Answer :

The leaves of cactus are modified into spines, to prevent water loss from the surface of leaves. ... Thus, the stem is the centre of photosynthesis in the cactus plants instead of the leaves.
by

Related questions

In cactus, the spines are the modified – (1) stern (2) stipulse (3) leaves (4) buds

Description : In cactus, the spines are the modified – (1) stern (2) stipulse (3) leaves (4) buds

Last Answer : (3) leaves Explanation: Most cactus morphologists have concluded that cactus spines are modified leaves. They are wholly transformed leaves that protect the plant from herbivores, radiate heat from the stem during the day, and collect and drip condensed water vapour during the cooler night.

In cactus, the spines are the modified (1) stem (2) stipulse (3) leaves (4) buds

Description : In cactus, the spines are the modified (1) stem (2) stipulse (3) leaves (4) buds

Last Answer : leaves

Plants adapted to low light intensity have (a) larger photosynthetic unit size than the sun plants (b) higher rate of CO2 fixation than the sun plants (c) more extended root system (d) leaves modified to spines.

Description : Plants adapted to low light intensity have (a) larger photosynthetic unit size than the sun plants (b) higher rate of CO2 fixation than the sun plants (c) more extended root system (d) leaves modified to spines.

Last Answer : (a) larger photosynthetic unit size than the sun plants

Leaves become modified into spines in (a) onion (b) silk cotton (c) Opuntia (d) pea.

Description : Leaves become modified into spines in (a) onion (b) silk cotton (c) Opuntia (d) pea.

Last Answer : (c) Opuntia

Stipules are modified into spines in

Description : Stipules are modified into spines in

Last Answer : Stipules are modified into spines in A. Shoe Flower B. Cotton C. Zizyphus D. Dalbergia

How does the spines on an octopus tree help the plant's leaves keep the water they need

Description : How does the spines on an octopus tree help the plant's leaves keep the water they need

Last Answer : Need Answer

Leaf-spines and their functions. -Biology

Description : Leaf-spines and their functions. -Biology

Last Answer : answer:

Did you know some spammer have spines? Who would actually do this "work"?

Description : Did you know some spammer have spines? Who would actually do this "work"?

Last Answer : There are desperate, computer savvy people in India that “farm” on Farmville for a small fee. How sad – for both sides of the funds transfer.

While stranded in the desert, you come across two creatures offering water. Only, one has no nose, and one has spines. They say that one has poison, and the other will keep you going for a few more hours. Which one can't you trust? -Riddles

Description : While stranded in the desert, you come across two creatures offering water. Only, one has no nose, and one has spines. They say that one has poison, and the other will keep you going for a few more hours. Which one can't you trust? -Riddles

Last Answer : The one with no nose, for it’s a snake that bears poison. The other is a cactus, which has water in it.

Arms, pedicellariae and spines are absent in the echinoderm

Description : Arms, pedicellariae and spines are absent in the echinoderm

Last Answer : Arms, pedicellariae and spines are absent in the echinoderm A. Sea cucumber B. Sea lily C. Sea star D. Sea urchin

How do echidna use their spines?

Description : How do echidna use their spines?

Last Answer : Feel Free to Answer

Open stunted forests with bushes and having long roots and sharp thorns or spines are commonly found in (a) Eastern Odisha (b) North-Eastern Tamil Nadu (c) Shiwaliks and Terai regions (d) Western Andhra Pradesh

Description : Open stunted forests with bushes and having long roots and sharp thorns or spines are commonly found in (a) Eastern Odisha (b) North-Eastern Tamil Nadu (c) Shiwaliks and Terai regions (d) Western Andhra Pradesh

Last Answer : Ans: (d)

Second degree uterovaginal prolapse is characterized by: a) Complete protrusion of uterus outside introitus. b) Descent of genital tract within vagina. c) Descent of genital tract upto introitus. d) Descent of genital tract outside the introitus. e) Descent of cervix below the ischeal spines.

Description : Second degree uterovaginal prolapse is characterized by: a) Complete protrusion of uterus outside introitus. b) Descent of genital tract within vagina. c) Descent of genital tract upto introitus. d) Descent of genital tract outside the introitus. e) Descent of cervix below the ischeal spines.

Last Answer : d) Descent of genital tract outside the introitus.

A weed having spines as adaptations that repel grazing a). Solanum nigrum b). Solanum xanthocarpus c). Parthenium d). Ageratum

Description : A weed having spines as adaptations that repel grazing a). Solanum nigrum b). Solanum xanthocarpus c). Parthenium d). Ageratum

Last Answer : b). Solanum xanthocarpus

How to start stem with leaves and flower buds from cactus

Description : How to start stem with leaves and flower buds from cactus

Last Answer : Need Answer

why is my ********* cactus leaves turning purple

Description : why is my christmas cactus leaves turning purple

Last Answer : Need Answer

********* Cactus seems to have brown tips on leaves(?)

Description : Christmas Cactus seems to have brown tips on leaves(?)

Last Answer : Need Answer

why are the leaves on my agave cactus turning yellow at the ends

Description : why are the leaves on my agave cactus turning yellow at the ends

Last Answer : Need Answer

how do you freeze cactus leaves

Description : how do you freeze cactus leaves

Last Answer : Need Answer

How genetically modified plants can reduce usage of chemical pesticides? -Biology

Description : How genetically modified plants can reduce usage of chemical pesticides? -Biology

Last Answer : answer:

How genetically modified plants can enhance nutritional value of food crops? -Biology

Description : How genetically modified plants can enhance nutritional value of food crops? -Biology

Last Answer : answer:

Are cactus plants supposed to wiggle and vibrate all by themselves?

Description : Are cactus plants supposed to wiggle and vibrate all by themselves?

Last Answer : Need more information.

Something is eating on my cactus & century plants, what could it be?

Description : Something is eating on my cactus & century plants, what could it be?

Last Answer : You might have a deer problem, after the sun goes down & the plant has cooled off, mix up 2 tablespoons dawn, 2 or 3 drops of hot sauce and 1 qt of water................spray................ ... lights suddenly go on.............water sprinklers on solar also chase them..............Happy summer.

should I put a full spectrum light n my cactus & jad plants?

Description : should I put a full spectrum light n my cactus & jad plants?

Last Answer : Need Answer

Stems modified into flat green organs performing the functions of leaves are known as (a) phylloclades (b) scales (c) cladodes (d) phyllodes.

Description : Stems modified into flat green organs performing the functions of leaves are known as (a) phylloclades (b) scales (c) cladodes (d) phyllodes.

Last Answer : (a) phylloclades

The edible part of an onion is - (1) Modified root (2) Aerial flower (3) Aerial stem (4) Fleshy leaves

Description : The edible part of an onion is - (1) Modified root (2) Aerial flower (3) Aerial stem (4) Fleshy leaves

Last Answer : (4) Fleshy leaves Explanation: Edible plant stems are one part of plants that are eaten by humans. Most plants are made up of roots, stems, leaves, flowers, buds and produce fruits containing ... which theprimary storage tissue is expanded leaf bases. They come in white, yellow, and red varieties.

Write down the modifications of leaves (Modified forms)?

Description : Write down the modifications of leaves (Modified forms)?

Last Answer : Leaf Tendrils: - In this case the leaf is modified into wire like coiled structure that help the plant in climbing some objects as in pea. Leaf Spines: - For protection as in ... and digesting insects. Examples include insectivorous plants such as pitcher plant, venus fly trap and bladderwort. 

7. In a recombinant DNA technology a plasmid vector must be cleaved by a) the same enzyme that leaves the donor gene b) modified DNA ligase c) a heated alkaline solution d) four separate enzymes

Description : 7. In a recombinant DNA technology a plasmid vector must be cleaved by a) the same enzyme that leaves the donor gene b) modified DNA ligase c) a heated alkaline solution d) four separate enzymes

Last Answer : a) the same enzyme that leaves the donor gene

The edible part of an onion is (1) Modified root (2) Aerial flower (3) Aerial stem (4) Fleshy leaves

Description : The edible part of an onion is (1) Modified root (2) Aerial flower (3) Aerial stem (4) Fleshy leaves

Last Answer : Fleshy leaves

Production of genetically modified plants is both a boon and bane. Explain.

Description : Production of genetically modified plants is both a boon and bane. Explain.

Last Answer : By genetically modifying plants we can increase the yield, improve the plant breeds, make them pest and disease resistant. We can also transfer nitrogen fixing gene. The greatest disadvantage of genetically modified plants is the sterility of seeds which is a threat to conservation of plant species.

What are genetically modified plants or transgenic plants?

Description : What are genetically modified plants or transgenic plants?

Last Answer : The plants in which a specific gene responsible for desired trait is selected and introduced directly into the new plant variety are called genetically modified or transgenic plants.

The first genetically modified plants, the soybean resistant to glyphosate was developed during a). 1983 b). 2003 c). 1993 d). 1973

Description : The first genetically modified plants, the soybean resistant to glyphosate was developed during a). 1983 b). 2003 c). 1993 d). 1973

Last Answer : a). 1983

The authority associated with the first genetically modified plants the soybean resistant to glyphosate from Monsanto which achieved widespread success was a.) Rachel Carson (May 27, 1907 – April 14, 1964) b). Fritz Haber (9 December 1868 – 29 January 1934) c). Robert Fraley (birthdate: 1953) d). Norman Borlaug (March 25, 1914 – September 12, 2009)

Description : The authority associated with the first genetically modified plants the soybean resistant to glyphosate from Monsanto which achieved widespread success was a.) Rachel Carson (May 27, 1907 - April 14, 1964) b). ... Fraley (birthdate: 1953) d). Norman Borlaug (March 25, 1914 - September 12, 2009)

Last Answer : c). Robert Fraley (birthdate: 1953)

The first genetically modified plants from Monsanto resistant to glyphosate which achieved widespread success were a). Maize b). Canola c). Cotton d). Soybeans

Description : The first genetically modified plants from Monsanto resistant to glyphosate which achieved widespread success were a). Maize b). Canola c). Cotton d). Soybeans

Last Answer : d). Soybeans

What are the advantages of production of genetically modified crops? -Biology

Description : What are the advantages of production of genetically modified crops? -Biology

Last Answer : answer:

What are the disadvantages of production of genetically modified crops? -Biology

Description : What are the disadvantages of production of genetically modified crops? -Biology

Last Answer : answer:

What are the advantages of Genetically Modified Organisms (GMO)? -Biology

Description : What are the advantages of Genetically Modified Organisms (GMO)? -Biology

Last Answer : answer:

Why is flower a modified shoot? -Biology

Description : Why is flower a modified shoot? -Biology

Last Answer : answer:

If I bought a cactus, what should I name it?

Description : If I bought a cactus, what should I name it?

Last Answer : [edit]

Is there any evidence that the American Indians in the Southwest used cacti/cactus as weapons?

Description : Is there any evidence that the American Indians in the Southwest used cacti/cactus as weapons?

Last Answer : I guess they can hide in a cactus field and watch their enemy’s get prickled.

How can I get my cactus to flower?

Description : How can I get my cactus to flower?

Last Answer : answer: The Cleistocactus winteri has salmon-pink flowers in spring and summer, 1.6 to 2.4 inches (4 to 6 cm) in length, 2 inches (5 cm) in diameter. Mature plants bloom repetitively. The flowers ... not yet mature. One reference i found said that a women had hers for two years before it bloomed.

I inherited this cactus plant (I believe) from my girlfriend's Uncle. How do I take care of it?

Description : I inherited this cactus plant (I believe) from my girlfriend's Uncle. How do I take care of it?

Last Answer : answer:First things first, have you given it an appropriate name? You can see some good tips here.

Does anyone have any cactus-growing tips?

Description : Does anyone have any cactus-growing tips?

Last Answer : You have to replicate a desert-like environment in order for cacti to grow and thrive. That means a long, hot, sunny, dry season and then a seasonal downpour.

Cactus League 2008 Season?

Description : Cactus League 2008 Season?

Last Answer : I just love the atmosphere down there. The mets and white sox are looking really good this year.

cactus freezing temperatures

Description : cactus freezing temperatures

Last Answer : Different species of cactus can tolerate different low temperatures. The most hardy species like the Flowered Hedgehog Cactus can tolerate temperatures as low as -20 degrees F while others will not survive these types of temperatures.

My beautiful blooming ********* cactus was left outside over several days of a freeze what do i do? to save it!

Description : My beautiful blooming christmas cactus was left outside over several days of a freeze what do i do? to save it!

Last Answer : You can start by heating some milk (2%) in a saucepan and pour the now lukewarm milk at the base of the cactus then gently wrap the base of the cactus you will need to change out the ... each application, very 2 - 3 days, you should see a remarkable difference after the two week mark -Birdy

When is the best time to transplant my outdoor cactus?

Description : When is the best time to transplant my outdoor cactus?

Last Answer : No, the best time to transplant is when they are dormant, its will be less stress on the plant itself.

can't identify the enormous ground level cactus taking over a front yard??

Description : can't identify the enormous ground level cactus taking over a front yard??

Last Answer : Need Answer

Why is my ********* cactus not flowering

Description : Why is my christmas cactus not flowering

Last Answer : I would leave it there the tree will block ii from inside.. It likes one location and don't like to be moved and they like to be moist not soaked..