The diagram shows a flower seen from above.
Use the key to find the name of the family to which it belongs.
▶️ Answer/Explanation
Ans: B
Following the dichotomous key:
- The flower has 4 petals (visible in the diagram) → Go to 2.
- The petals are separate (not fused) → Family Brassicaceae (B).
Options A (Liliaceae) and C (Fabaceae) are eliminated as they require fused petals or different petal counts. The correct family is B (Brassicaceae).
Which statements about sexual reproduction in plants are correct?
- Anthers in wind-pollinated flowers are inside the flower.
- Pollen grains in insect-pollinated flowers are large and sticky.
- The stigma in insect-pollinated flowers is outside the flower.
A) 1 and 2
B) 1 only
C) 2 only
D) 3 only
▶️ Answer/Explanation
Ans: C
Statement 1: False – Anthers in wind-pollinated flowers are exposed (not inside) to release pollen easily.
Statement 2: True – Pollen grains in insect-pollinated flowers are large and sticky to attach to pollinators.
Statement 3: False – The stigma in insect-pollinated flowers is inside the flower to catch pollen from visiting insects.
Only Statement 2 is correct, so the answer is C (2 only).