Botany MCQs for NEET — Practice Questions with Answers

Stipular tendril modification is found in Smilax. In this modification, the stipules, which are small leaf-like structures found at the base of the leaf stalk, transform into tendrils that help the plant to climb.

Viscum, commonly known as mistletoe, is a partial stem parasite. It attaches to the host tree, penetrates its tissues, and extracts water and nutrients. However, it also performs photosynthesis, hence it is not a total parasite.

Phylloclades are modified stems that are green and succulent, allowing them to carry out photosynthesis. They have indefinite growth and are adapted to arid conditions, where leaves are reduced to minimize water loss.

The bladder of Utricularia (bladderwort) and the pitchers of Nepenthes are modifications of leaves. These structures are specialized for trapping and digesting insects, providing the plants with essential nutrients.

The tallest gymnosperm is Sequoia, specifically the Sequoia sempervirens, also known as the Coast Redwood. These trees can reach heights of over 300 feet. Eucalyptus and Ranunculus are not gymnosperms, and while Pinus (pine trees) are gymnosperms, they do not reach the extreme heights of Sequoias.

The 'eyes' of the potato tuber are axillary buds. These are the points on the potato where new shoots will grow. Each 'eye' can sprout to form a new plant, which is why potatoes can be propagated by planting pieces of the tuber containing at least one eye.

Mangrove plants live in marshy areas along sea shores. These unique ecosystems are characterized by salt-tolerant trees and shrubs that thrive in coastal intertidal zones. Mangroves play a crucial role in protecting coastlines from erosion and providing habitat for a variety of marine life.

In peach (Prunus persica), the ovary is half-inferior. This means that the ovary is partially embedded within the receptacle, a characteristic seen in certain types of flowers. Understanding the position of the ovary helps in identifying the type of fruit and its development.

Flowers are zygomorphic (bilaterally symmetrical) in Gulmohar (Delonix regia). Zygomorphic flowers can be divided into two equal halves in only one plane. This is a key identifying feature of flowers like Gulmohar, which aids in their classification.