Question 3 :
State whether the statement is TRUE or FALSE : Banana is reproduced by the asexual method.
Question 4 :
The number of chromosomes in parents and offsprings of a particular species remains constant due to
Question 6 :
Factors responsible for the rapid spread of bread mould on slices of bread are presence of tubular branched hyphae. Is it true or false?
Question 7 :
State whether the statement is TRUE or FALSE : Flowers are always bisexual.
Question 8 :
In a flower, the parts that produce male and female gametes (germ cells) are
Question 9 :
State whether the statement is TRUE or FALSE : After fertilisation Flowers give rise to fruits.
Question 10 :
State whether the statement is TRUE or FALSE : Sexual reproduction in flowering plant,Offspring formed are clones.
Question 11 :
Offspring formed as a result of sexual reproduction exhibit more variations because
Question 12 :
In human females, an event that reflects onset of reproductive phase is
Question 13 :
Whether secretion of estrogen is the function of testes at puberty?
Question 14 :
Whether formation of germ cells is the function of testes at puberty ?
Question 16 :
Why does bread mould grow profusely on a moist slice of bread rather than on a dry slice of bread?
Question 17 :
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: Can organism with fewer chromosomes reproduce more easily than organisms with more number of chromosomes?
Question 18 :
In tobacco plant, the male gametes have twenty four chromosomes. What is the number of chromosomes in the female gamete?
Question 19 :
In tobacco plant, the male gametes have twenty four chromosome.What is the number of chromosomes in the zygote?
Question 20 :
State whether the statement is TRUE or FALSE : Colonies of yeast fail to multiply in water, but multiply in sugar solution.
Question 22 :
What changes are observed in the uterus if fertilisation does not occur?
Question 23 :
What changes are observed in the uterus subsequent to implantation of young embryo?
Question 24 :
<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 Production of egg