Important Questions Test: Getting to Know Plants - UPSC MCQ

Flower is the most beautiful part of plant. Generally it is colourful.

The part of plant above the ground is called as shoot system, which includes stem, branches and leaves.

Leaves are green due to presence of green pigment called chlorophylls inside chloroplast.

Tiny pores on the surface of leaves are called stomata. Stomata is responsible for exchange of gases and transpiration.

The leaves of spinach is used as vegetable which contain Iron, and protein in large quantity.

- Sweet Potato Tuber:
- The sweet potato tuber is an example of a *modified root*.
- Unlike regular roots, these are specifically adapted for storage of nutrients.
- Function:
- It stores carbohydrates, providing energy for the plant during unfavorable conditions.
- Distinction:
- Sweet potato differs from a white potato, which is a modified stem called a tuber.
- Conclusion:
- Sweet potatoes are tuberous roots, adapting from regular roots for storage.

Trees are characterized by having a thick and hard stem, known as a trunk, which supports the plant as it grows taller. This is a key feature that distinguishes trees from other types of plants like herbs, shrubs, and climbers.

Pollen grains are produced inside anther of stamen that produce male gametes.

Primary function of leaf is to prepare food by the process of photosynthesis in presence of sunlight.

The spines of cactus are modified leaves to reduce rate of transpiration in plants.