TN 12TH BOTANY - Online Test
Q1. Pollen tube was discovered by
Answer : Option B
Explaination / Solution:
No Explaination.
Q2. Pollen tablets are available in the market for
Answer : Option C
Explaination / Solution:
No Explaination.
Q3. Which one of the following is an example of polygenic inheritance?
Answer : Option D
Explaination / Solution:
No Explaination.
Q4. F2 generation in a Mendelian cross
shows that both genotypic and phenotypic ratios are same as 1:2:1. It
represents a case of
Answer : Option A
Explaination / Solution:
No Explaination.
Q5.
Which of the following sentences are
correct?
1. The offspring exhibit only parental
combinations due to incomplete linkage
2. The linked genes exhibit some
crossing over in complete linkage
3. The separation of two linked genes
are possible in incomplete linkage
Answer : Option C
Explaination / Solution:
No Explaination.
Q6. Genetic engineering is
Answer : Option B
Explaination / Solution:
No Explaination.
Q7. Which of the following is not a feature of the plasmids?
Answer : Option B
Explaination / Solution:
No Explaination.
Q8. The time duration for sterilization process by using autoclave is ______ minutes and the temperature is _______
Answer : Option B
Explaination / Solution:
No Explaination.
Q9.
Read the given statements and select the
correct option.
i) Hydrophytes possess aerenchyma to
support themselves in water.
ii) Seeds of Viscum are positively
photoblastic as they germinate only in presence of light.
iii) Hygroscopic water is the only soil
water available to roots of plant growing in soil as it is present inside the
micropores.
iv) High temperature reduces use of
water and solute absorption by roots.
Answer : Option B
Explaination / Solution:
No Explaination.
Q10. Pond ecosystem is
Answer : Option D
Explaination / Solution:
No Explaination.
