NEET Practice Questions (MCQs) with Answers & Solutions

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.

A drupe fruit is characterized by having a hard endocarp. The endocarp is the inner layer that surrounds the seed, commonly known as the stone or pit. Examples of drupes include cherries, peaches, and plums.