Advertisements
Advertisements
प्रश्न
(a) Coconut palm is monoecious, while date palm is dioecious. Why are they so called?
उत्तर
- Coconut palm is monoecious because both male and female flowers are borne on the same plant.
- Date palm is dioecious because these plants bears exclusively either male flowers or female flowers.
APPEARS IN
संबंधित प्रश्न
A liverwort plant is unable to complete its life cycle in a dry environment. State two reasons
What is a bisexual flower?
The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete, zygote, and the cells of the seedling will be, respectively, ______.
Choose the correct statements.
Given below are a few statements related to external fertilization.
- The male and female gametes are formed and released simultaneously
- Only a few gametes are released into the medium
- Water is the medium in a majority of organisms exhibiting external fertilization
- Offspring formed as a result of external fertilization have better chance of survival than those formed inside an organism
In oogamy, fertilization involves ______.
Meiosis takes place in ______.
What is true about the change in fertilized eggs of humans?
Rearrange the following events of sexual reproduction in the sequence they occur in a flowering plant:
Embryogenesis, Fertilisation, Gametogenesis, Pollination.
In haploid organisms that undergo sexual reproduction, name the stage in the life cycle when meiosis occurs. Give reasons for your answer.
Define perisperm.