Agriculture - Online Test
Q1. Which classes of algae possess chlorophyll a, chlorophyll b, carotenoids and xanthophylls?
Answer : Option B
Explaination / Solution:
Phaeophyceae possess chlorophyll a, c, carotenoids and xanthophylls. They vary in colour from olive green to various shades of brown depending upon the amount of the xanthophyll pigment, fucoxanthin present in them.
Q2. The splitting of water molecule take place inside
Answer : Option D
Explaination / Solution:
Splitting of the water molecule takes place on the inner side of the membrane, the protons or hydrogen ions that are produced by the splitting of water accumulate within the lumen of the thylakoids.
Q3. Flower is a modified shoot because
Answer : Option D
Explaination / Solution:
Flower is a modified shoot because it develops in the axils of bracts like axillary shoots. New buds also develop at node inside the axils of bracts of leaves.
Q4. Each gametes carry
Answer : Option A
Explaination / Solution:
Each gametes carry single set of chromosomes. During gamete formation each pair of alleles separate from each other as reduction division occurs.
Q5. What is the final product of Glycolysis?
Answer : Option B
Explaination / Solution:
Glycolysis involves the breaking down of a sugar (generally glucose, although fructose and other sugars may be used) into more manageable compounds in order to produce energy. The net end products of glycolysis are two Pyruvate, two NADH, and two ATP
Q6. When two parents participate in reproductive process and also involve fusion of their gametes, it is called
Answer : Option C
Explaination / Solution:
In sexual reproduction male and female gametes are produced by male and female organism. The fusion of gametes results into zygote formation that finally develops as new offspring.
Q7. The axillary buds of stems may also get modified into woody, straight and pointed thorns in
Answer : Option C
Explaination / Solution:
The axillary buds of stems may also get modified into woody, straight and pointed thorns in Citrus and Bougainvillea. They protect plants from browsing animals.
Q8. Which one is not a xylem cell?
Answer : Option C
Explaination / Solution:
Xylem is a complex tissue, which consists of four kinds of cells. These cells are tracheid, vessels, xylem parenchyma and xylem fibers. Companion cell is part of phloem tissue.
Q9. All changes that an organism goes through during its life cycle is called as
Answer : Option B
Explaination / Solution:
Development is a term that includes all changes that an organism goes through during its life cycle from germination of the seed to senescence.
Q10. Which one will reduce the rate of transpiration?
Answer : Option C
Explaination / Solution:
Transpiration takes place through stomata. Decrease in light intensity closes the stomata that ultimately results into reduction in rate of transpiration.
