What are the leaves of cactus modified into?
In cactus, leaves are modified into spines. It is the green stem that performs all the functions to be performed by leaves including photosynthesis.
Are the leaves of cactus plants modified into spines?
Its leaves are modified to extremely small-sized spines to minimize the surface area from which water can be lost. Its stem takes up the role of photosynthesis thus allowing it to survive in deserts. Hence, the Cactus is the correct answer here.
What is modified into spines in cactus?
The leaf parts become modified into spines in order to protect the plants from grazing animals and excessive transpiration.
Which leaves are modified into spines?
Leaves are modified into spines in Opuntia (xerophytes) so as to reduce the surface area and minimize rate of water loss by evaporation and transpiration. Besides, they also provide protection to the plant from grazing animals.
What are the advantages of leaves modified into spines in cactus plant?
Leaves of cactus plants are modified into spines to reduce loss of water through transpiration.
What are the advantages of leaves modified into spines in cactus?
Answer: Most species of cacti have lost true leaves, retaining only spines, which are highly modified leaves. As well as defending against herbivores, spines help prevent water loss by reducing air flow close to the cactus and providing some shade. In the absence of leaves, enlarged stems carry out photosynthesis.
Why leaves are modified as spines?
Spines are also modified leaves. In cacti, spines 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.
Why are leaves modified into spines in prickly pear?
Leaves of certain plants become wholly or partially modified for defensive purpose into sharp, pointed structures known as spines. Thus, in prickly pear the minute leaves of the axillary bud are modified into spines. … Their function is to protect the axillary bud that they bear in their axil.
How are leaves modified to provide additional support?
The leaves get modified into thread-like structures called tendrils. These tendrils climb a nearby stick or wall and provide support to the plant. … The upper leaflets of Pisum sativum get modified into tendrils.
Are modified into spines in?
In pea, the leaves are modified into tendrils to help them in climbing around support, in onion leaves are modified to fleshy succulent to store food. Leaves are modified into spines in Opuntia (xerophytes) so as to reduce the surface area and minimize rate of water loss by evaporation and transpiration.
Are roots modified into spines?
Roots are not modified into spines. It is the leaves that modify to spines containing vascular tissues. It is true that green plants need sunlight. … Plants make their food from carbon dioxide and water during photosynthesis.
Which part of plant body gets modified into spines in cactus for defense?
The stem is modified into a leaf-like structure and leaves are modified into spines in cactus.