Agriculture - Online Test
Q1. Auxanometer is used to measure
Answer : Option D
Explaination / Solution:
An auxanometer (Gr. auxain, "to grow" + metron, "measure") is an apparatus for measuring increase or rate of growth in plants.
In case of an arc-auxanometer (see picture), there is a wire fixed with the plant apex on one end and a dead-weight on the other.
Q2. Oozing of water drops from injured leaf edges is
Answer : Option A
Explaination / Solution:
Water drops comes out from theinjured leaf edges of leaves. This oozing of water drop from injured leaf edges is called leaf bleeding.
Q3. Micronutrients which is component of all organic compounds but not obtained from soil
Answer : Option D
Explaination / Solution:
Most of the micronutrients are obtained from soil. Micronutrient which is present in all organic compounds is carbon that is not obtained from soil.
Q4. Agar is obtained from
Answer : Option D
Explaination / Solution:
Agar, one of the commercial products obtained from Gelidium are used to grow microbes and in preparations of ice-creams and jellies.
Q5. Accessory pigments protect plants from
Answer : Option C
Explaination / Solution:
Other thylakoid pigments like chlorophyll b, xanthophylls and carotenoids, which are called accessory pigments, also absorb light and transfer the energy to chlorophyll a. Indeed, they not only enable a wider range of wavelength of incoming light to be utilized for photosynthesis but also protect chlorophyll a from photo-oxidation.
Q6. Which one shows meiosis
Answer : Option A
Explaination / Solution:
Anther produces pollen grains by the process of meiosis in which four microspores are produced by single microspore mother cell. The number of chromosome reduces to half.
Q7. Inheritance of skin colour in human being is an example of
Answer : Option D
Explaination / Solution:
Skin colour in human being is controlled by many genes so it is an example of polygenic inheritance.
Q8. How many step reactions are involved in glycolysis?
Answer : Option A
Explaination / Solution:
Glycolysis is a series of reactions that and extract energy from glucose by splitting it into two three-carbon molecules called pyruvates. Glycolysis is an ancient metabolic pathway, meaning that it evolved long ago, and it is found in the great majority of organisms alive today. Glycolysis has ten steps.
Q9. In diploid organism, gametes are produced by meiosis division but in haploid organism gametes are produced by
Answer : Option B
Explaination / Solution:
During mitosis division two daughter cells are produced having same number of chromosome. In meiosis division four daughter cells having half the number of chromosomes are produced. So, haploid organisms follow mitosis division.
Q10. Which part of the plant store food in garlic?
Answer : Option C
Explaination / Solution:
The fleshy leaves of onion and garlic store food.
