Question
Write the differences between male and female gametophyte.

Answer

Differences between male and female gametophytes are:
S. No.
Male gametophyte
Female gametophyte
1.
It is derived from a microspore, which is produced inside the pollen chamber of anther.
It is derived from a megaspore, which is formed inside the nucellus of an ovule.
2.
The microspores are shed at maturity and transferred from anthers to stigma by the process called pollination
The megaspores do not shed from the ovule. They develop to form embryo sac within the ovule.
3.
The mature male gametophyte is 3-celled.
The mature female gametophyte is 7-celled.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Increased levels of atmosphere $CO_2$​​​​​​​ result in the 'greenhouse effect' and thus global warming. The graph shows the effect of these changes on photosynthesis. What do you infer about the effect of $CO_2$​​​​​​​​​​​​​​ and temperature on the rate of photosynthesis in plants?
With the help of graphical illustration only, show the changes in the levels of the pituitary hormones during a menstrual cycle.
Answer the following question.
Explain the histological structure of ovary in human.
  1. What do ‘Y and ‘B’ stand for in ‘YAC’ and ‘BAC’ used in Human Genome Project (HGP)? Mention their role in the project.
  2. Write the percentage of the total human genome that codes for proteins and the percentage of discovered genes whose functions are known as observed during HGP.
  3. Expand ‘SNPs’ identified by scientists in HGP.
The study of:
  1. Fossils of dinosaurs.
  2. Forelimbs of Cheeta, bat and human.
  3. Thorns of Bougainvillea and tendril of Cucurbita shows that evolution of life forms has indeed taken place on earth. Explain.
What are the different ways in which gene therapy is used?
Copper ions-releasing IUDs are more efficient than non-medicated methods. Why?
Draw a labelled schematic sketch of replication fork of DNA. Explain the role of the enzymes involved in DNA replication.
Represent schematically the decomposition cycle in a terrestrial ecosystem.
What is the principle of Gel electrophoresis? Name the compound used for staining DNA to be used in recombinant technology. What is the colour of such stained DNA?