The diagram shows part of a flower.
Which processes have taken place?
▶️ Answer/Explanation
Ans: C
The diagram depicts a pollen tube growing from the stigma toward the ovule, indicating pollination (pollen transfer) and fertilization (fusion of gametes). These are key stages in sexual reproduction of flowering plants.
Option C correctly identifies these sequential processes. Other options either omit fertilization (A, B) or include incorrect stages like seed dispersal (D). Thus, C is the accurate choice.
The diagram shows the carpel of a flower just after pollination.
What is the name of the part labelled X?
A) filament
B) ovule
C) pollen tube
D) stigma
▶️ Answer/Explanation
Ans: C
The part labelled X is the pollen tube, which grows from the pollen grain after pollination. Its function is to deliver male gametes to the ovule for fertilization.
Filament (A) is part of the stamen, ovule (B) contains the female gamete, and stigma (D) is where pollen lands. Since X shows the tube growing from pollen, the correct answer is C (pollen tube).