Agriculture - Online Test
Q1. If GA3 is applied to the rice seedlings, the plant will show
Answer : Option D
Explaination / Solution:
GA3 is a gibberellins that help in elongation of stem of the plant. If GA3 plant hormone is applied to the rice seedling the plant will show extra elongation of plant body.
Q2. Mango is an example of
Answer : Option D
Explaination / Solution:
Drupe is an indehiscent fruit in which an outer fleshy part and surrounds a shell of hardened endocarp with a seed. Mango is an example of drupe.
Q3. In plant cell, the cytoplasm of the adjacent cells are connected through bridges called
Answer : Option D
Explaination / Solution:
The cytoplasm of two adjacent cells are connected through a bridge plasmodesmata. Movement of substance in plants takes place through this plasmodesmata.
Q4. Statement I: Seed is the basis of agriculture.
Statement II: Dehydration and dormancy of mature seed is crucial for storage of seeds.
Statement III: Seeds of rice and wheat remain viable for several years at normal condition.
Statement II: Dehydration and dormancy of mature seed is crucial for storage of seeds.
Statement III: Seeds of rice and wheat remain viable for several years at normal condition.
Answer : Option A
Explaination / Solution:
Seed is the basis of agriculture. Before storage, seeds are dehydrated in sunlight. Seeds remain dormant till the favorable condition is present. Seeds of wheat and rice remain viable only few years.
Q5. The most abundant element found in plants is
Answer : Option A
Explaination / Solution:
Carbon is generally present in plant tissues in large amounts and mainly obtained from CO2 and H2O.
Q6. Self-pollination is transfer of pollen from anther to stigma of
Answer : Option B
Explaination / Solution:
The transfer of pollen grain from anther to stigma of same flower is called self-pollination. Both anther and stigma must be ready at same time for this kind of pollination.
Q7. The number of Oxygen molecules released per photon or quantum of light is called
Answer : Option A
Explaination / Solution:
Quantum yield is the number of Oxygen molecules released per photon or quantum of light. During light reaction of photosynthesis oxygen molecules are release during photolysis.
Q8. A which one is living fossil
Answer : Option C
Explaination / Solution:
Ginkgo is a living fossil. This plant belongs to gymnosperms division. It is considered as one of the oldest plant known and still surviving in some part of wold.
Q9. Henking X-body present in 50% of sperms are now known as
Answer : Option B
Explaination / Solution:
Henking trace a specific structure in 50% of sperms. He gave the name x-body to this structure but he was not able to explain the significance of this structure. Further, investigation revealed that x-body was a chromosome, called X-chromosome.
Q10. Oxidative phosphorylation is
Answer : Option C
Explaination / Solution:
Oxidative phosphorylation is process in which ATP is produced by chemiosmosis in inner wall of mitochondria called cristae.
