Question

What is the function of germ pore?
A) Absorption of water for seed germination
B) Initiation of pollen tube
C) Release of male gamete
D) Emergence of radicle

Answer 1

Hint: The germ pore is a tiny pore in the external wall of a fungal spore. It can be either connected with apex or located eccentrically. When viewed under a light microscope, a germ pore appears as a light coloured layer on the cell wall.

Complete Answer:
- The growth of a plant seed into a plant is known as germination. During the inception stage of the germination, the seeds take up water quickly. The growth starts due to the activation of enzymes. After this, the seed activates its internal structure.
- Later it starts to breathe and produce proteins. This helps to metabolize the stored food. Secondly, the radicle emerges and forms the primary roots. After this, the shoot starts to grow upwards. In the final stage of seed germination, the cells elongate and part to give rise to the seedling.

- The pollen tube is a tubular structure formed by the male gametophyte of the seedlings when it germinates. Pollen tube elongation is an essential part of the life cycle of the plant. A germ pore is a place from which the germ tube emerges during germination.
- After pollination, the stigmatised pollen grain consumes water and nutrients from the stigmatic secretion via its germ pores.

The correct answer is option B, the initiation of pollen tube.

Note: Sexual reproduction occurs in seed plants due to the Pollen tube formation. The reproduction occurs due to the wind, water or pollinators, which transport pollen grains to the female gametophyte. The germination process gets initiated, when the pollen grains are implanted on the stigma.