Chapter 19 - Growth and Development - 1

Chapter 19 - Growth and Development - 1

1. The progressive changes which are undergone before an organism acquires its adult’s form constitute:

a) Metamorphosis
b) Growth
c) Embryonic development
d) Development

2. Meristems found at the tips of root and shoot are called:

a) None of them
b) Lateral
c) Intercalary
d) Apicial

3. During cell division the number of cells increase by:

a) Mitosis
b) Elongation
c) Maturation
d) Meiosis

4. During elongation the cell volume increases upto 150 due to uptake of:

a) Water
b) Food
c) Minerals
d) Air

5. The light which favours elongation of cells is:

a) Ultraviolet
b) Red
c) Blue
d) White

6. Metabolic activity and growth can not take place in absence of:

a) Oxygen
b) CO₂
c) High temperature
d) Light

7. Apical dominance is caused by ______ diffusing from the apical bud which inhibits the growth of lateral buds:

a) Water
b) Auxin
c) Food
d) Minerals

8. A series of mitotic divisions which take place in a zygote are called:

a) Cleavage
b) Fertilization
c) Gastrulation
d) Growth

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