Explain the process of segmentation with the help of a proper example of plants.
WBBSE
Class X
Life Science
02 (a) Cell Division and Cell Cycle
02 Mark
2023
Segmentation is the process in which a zygote divides repeatedly by mitosis to form many cells called blastomeres. These blastomeres remain attached to each other and form a multicellular embryo.
Related Questions
More WBBSE Moderate level questions
1/12
Q.
Mention any two phenomena during G1 phase of Interphase.
A.
The two phenomena during G1 phase of Interphase The cell grows in...
Q.
Write two features of Amitotic cell division.
A.
The two features of Amitotic cell division are Amitotic cell division does...
Q.
Explain the following three significances of cell division
A.
Growth: Cell division increases the number of cells, allowing an organism to...
Q.
Write one function of each of the following five parts of the human eyeball: (a)...
A.
Part Function Cornea Refracts (bends) light entering the eye onto the lens....
Q.
Match the words in column-A with the most appropriate words in column B and re-write...
A.
Column A Column B 1. Meninges (e) Protects brain and spinal cord...
Q.
Cell division becomes uncontrolled if the function of checkpoints becomes hampered — True or False?
A.
True Explanation Cell cycle checkpoints are control mechanisms that ensure the proper...
Q.
How does the Cytokinesis of plant cell happen?
A.
Cytokinesis in plant cells occurs by the formation of a cell plate...
Q.
Compare DNA and RNA on the basis of the following features — (a) Nature of...
A.
Features DNA RNA Nature of carbohydrate Deoxyribose Ribose Nature of pyrimidine base...
Q.
Show the chemical constituents of chromosomes with the help of a table.
A.
Chemical Constituent Description DNA (Deoxyribonucleic Acid) Carries genetic information in the form...
Q.
Explain the following two significances of meiotic cell division
A.
Meiotic cell division halves the chromosome number in gametes, so that when...
Q.
Tabulate which changes occur in a chromosome during the Anaphase of Karyokinesis.
A.
Change Description Centromere splits The centromere, which holds the two sister chromatids...
Q.
Distinguish between the mitosis of plant cells and the mitosis of animal cells on the...
A.
Feature Plant Cell Animal Cell Formation of spindle fibres Formed by centrioles...