Botany MCQs for NEET — Practice Questions with Answers

Roots typically lack chlorophyll, which is the green pigment used in photosynthesis. Instead, roots are primarily involved in the absorption of water and minerals from the soil, anchoring the plant, and storing nutrients. The presence of chlorophyll is a characteristic feature of aerial parts like leaves.

Adventitious roots are roots that grow from any part of the plant other than the radicle. They can grow from stems, leaves, or old woody roots and are often involved in vegetative propagation, stability, and support of the plant.

Perennials are plants that live for more than two years. They complete their life cycle over multiple growing seasons, unlike annuals (one growing season) and biennials (two growing seasons). This makes them distinct in their ability to survive and bloom over several years.

The modified stem of Carissa carandas, also known as Karonda, forms thorns. These thorns protect the plant from grazing animals. Thorns are a common modification in many plants to deter herbivores.

Beauty of Bougainvilla flowers is due to their colourful bracts.

Unisexual flowers are those that have either stamens (male reproductive organs) or carpels (female reproductive organs), but not both. This means only one set of essential organs develops, distinguishing unisexual flowers from others that may have both sets.

The perianth is the non-reproductive part of the flower and consists of the calyx (sepals) and corolla (petals). When the sepals and petals are indistinguishable and appear similar, they are collectively referred to as 'tepals'.

The hairs present in maize corn cob are actually the styles of the flower. Each 'hair' or silk leads to an ovule, which, when fertilized, will develop into a kernel of corn.

A seed is formed from the fertilized ovule. It contains the embryo, which will develop into a new plant, along with a food supply and a protective seed coat.

A pome fruit is considered false because the fleshy part of the pome is not derived from the ovary but from the thalamus. In pome fruits like apples and pears, the actual ovary is inside, and what we eat is primarily the enlarged thalamus.