Getting to Know About Plants: 17 MCQs with answers

A · Leaves

Leaves contain chlorophyll and are the main site of photosynthesis.

D · Chlorophyll

Chlorophyll is the pigment that absorbs light energy for photosynthesis.

D · Carbon dioxide

Plants use carbon dioxide from the air to make food.

A · Absorb water and minerals

Roots anchor the plant and absorb water and minerals from the soil.

D · Flower

After pollination, the flower develops into a fruit containing seeds.

A · True

Photosynthesis takes place mainly in the leaves, where chlorophyll captures sunlight to make food from water and carbon dioxide.

A · The plant cannot make food without light

Photosynthesis requires light; without it, the plant cannot produce food and becomes pale.

B · To catch maximum sunlight

Flat, broad leaves provide a large surface area to capture sunlight for photosynthesis.

C · Potato

Potato is a modified underground stem that stores food, while carrot and radish are roots.

B · Germination

Germination is the sprouting of a seed into a new plant.

B · To capture sunlight for photosynthesis

Chlorophyll captures light energy, which is essential for photosynthesis.

C · They produce their own food using sunlight

Producers make their own food, unlike consumers that eat other organisms.

D · The plant will wilt because it cannot absorb water

Damaged roots cannot absorb water efficiently, leading to wilting even if water is available.

B · They reduce water loss

Spines reduce surface area and water loss, helping the cactus survive in dry conditions.

A · Roots are long and branching to reach water

The long, branching shape of roots directly suits their function of absorbing water and minerals from a wide area.

D · Plants absorb water and minerals from soil but make food in leaves.

Plants use soil for water and minerals, but their food is made through photosynthesis in the leaves.

C · Narrow leaves reduce water loss in arid conditions, demonstrating adaptation.

The correct option is B because narrow leaves in a desert environment help minimize water loss, which is crucial for survival in arid conditions. This illustrates how leaf shape is adapted to the specific environmental challenges faced by the plant.