A polyestrous animal is
1. Man
2. Cat
3. Rabbit
4. Horse
Which one represents male gamete?
1. Antipodals
2. Synergids
3. Endosperm
4. Pollen grain
Which one of the following generates new genetic combinations leading to variation?
1. Nucellar polyembryony
2. Vegetative reproduction
3. Parthenogenesis
4. Sexual reproduction