1) What is a pollen grain?
- It is a male gametophyte produced from the anthes which produces 2 male gametes
2) What is the formula to calculate percentage of pollen grain germination?
- Formula for percentage of pollengrain germination on is 𝑛/𝑁 X 100
3) At what celled stage the pollen grains are dehisced in angiosperms.
- At two celled stage pollen grains are dehisced.
4) Name the two layers / walls of pollen grain ?
- The outer Exine and inner intine
5) What are the two cells of pollen grain?
- The upper generative cell and lower vegetative cell
6) Name the specimens used in the lab to calculate pollen germination?
- Pomegranate, vinca, clunarose.
7) What is solution that nurtures the pollen grain to produce pollen tube
- Sucrose solution
8) How many pollen tubes are produced per pollen grain
- 1-3 pollen tubes can be produced
9) Name the chemical found in exine of pollen grain
- Sporopollenin
10)Name the apertures through which pollen tube emerge out of pollen grain
- Germpore
11)In nature, where is the nutrient medium present in flower for pollen germination
- Stigma
12)What does the pollen tube carry?
- 2 male gametes & 1 tube nucleus
