Botany - Online Test
Q1. How many cells per hour does a single maize root apical meristem can give?
Answer : Option C
Explaination / Solution:
Growth is measured by a variety of parameters some of which are: increase in fresh weight, dry weight,length, area, volume and cell number.
one single maize root apical mersitem can give rise to more than17,500 new cells per hour, whereas cells in a watermelon may increase in size by upto 3,50,000 times.
In the former, growth is expressed as increase in cell number; the latter expresses growth as increase in size of the cell.
Q2. Totipotency refers to
Answer : Option B
Explaination / Solution:
No Explaination.
Q3. Arrange the correct sequence of ecological hierarchy starting from lower to higher level.
Answer : Option C
Explaination / Solution:
No Explaination.
Q4. The alga which leads endozoic life is
Answer : Option D
Explaination / Solution:
No Explaination.
Q5. Which of the following is not a abiotic component of the ecosystem?
Answer : Option D
Explaination / Solution:
No Explaination.
Q6. Plants which produce characteristic pneumatophores and show vivipary belong to
Answer : Option A
Explaination / Solution:
No Explaination.
Q7. In which plant foliar roots arises from foliar buds
Answer : Option C
Explaination / Solution:
No Explaination.
Q8. Root hairs absorb water from soil with the help of
Answer : Option C
Explaination / Solution:
Root hairs absorb water from soil with the help of suction pressure created due to concentration difference of water and mineral ions present in soil.
Q9.
With respect to Eichhornia
Statement A: It drains off oxygen from
water and is seen growing in standing water.
Answer : Option A
Explaination / Solution:
No Explaination.
Q10. While studying the history of domestication of various cultivated plants _______ were recognized earlier
Answer : Option A
Explaination / Solution:
No Explaination.
