REPRODUCTION IN ORGANISMS
Biology Value Based Questions: VBQs for CBSE Class 12 NCERT Biology (Zoology)
Question 1. On
biological excursion, Ramesh asked his teacher that in nature, we find some
organisms live for few weeks to few months whereas the other live for many
years as long as few even a thousand years.
A. What is the term
used for the certain period of time an organism lives?
B. Is there any
correlation between the time-periods an organism lives?
C. Why a rice plant
lives for 3-4 months, while a banyan tree lives for 300-500 years?
Question 2. One day
Tanya noticed that in her home loan the gardener was planting the pieces of
Bryophylum for production of new plants. The other day the gardener was putting
the seeds of Viola (Pansy) in the soil.
A. Name the type of
reproduction, used in the first instance.
B. Is this reproduction
can be considered as a type of asexual reproduction? Is the term clone
applicable to the offspring?
C. Name the type of
process by which seeds are produced. Is the term clone is also applicable to
the offspring produced from the seeds?
Question 3. Rajesh
observed some changes in external features of his son Raman such as in his
behaviour, development of stout lengthy body, appearance of moustaches, beard
etc. whereas his daughter Rita did not have these changes.
A. What is this stage
of growth and maturity called?
B. What does the end of
this phase indicate?
C. What factors
regulate this process of transition from childhoods to the maturity?
Question 4. Karan
was very astonished to observe small fish-like tadpoles of the frog swimming in
the pond; young checks hatching out of the eggs and the female frog giving
birth to 4-5 puppies.
A. Name the process
& the product, formed by the fusion of male and female gametes.
B. Name the term for
animals which lay eggs. What is the special feature of the eggs? Are the eggs
in fertilized or unfertilized state?
C. Name the group of
animals which lay eggs. What is the special feature of the eggs? What is the
source of nutrition for the developing embryo?
Related
Posts
- CBSE Class XII, Reproduction in Organisms - NCERT solutions of Biology textbook exercise questions
- Class 12 Biology - Chapter wise NCERT Solutions CBSE Guess and Guide
No comments:
Write comments