Question Text
Question 1 :
Is the chromosome number of zygote, embryonal cells and adult of a particular organism always constant?
Question 2 :
What would be the ratio of chromosome number between an egg and its zygote?
Question 3 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61cc185078c526e972caea1d.PNG' />
In the above figure, would a Planaria cut vertically into two halves regenerate into two individuals?
Question 4 :
In tobacco plant, the male gametes have twenty four chromosome.What is the number of chromosomes in the zygote?
Question 5 :
Gather information about the chromosome numbers of five animals and five plants. Correlate the number with the size of organism and answer the following questions: More the number of chromosomes/cells greater is the DNA content.
Question 7 :
In human females, an event that reflects onset of reproductive phase is
Question 8 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61cc185078c526e972caea1f.PNG' />
In the above figure, which part mention the function Site of implantation.
Question 9 :
What changes are observed in the uterus if fertilisation does not occur?
Question 10 :
Whether secretion of testosterone is the function of testes at puberty?
Question 11 :
The egg is carried from the _______ to the _______ through a thin _______ or __________.
Question 13 :
The flower may be _______ when it contains both stamens and pistil.