Agriculture - Online Test
Q1. The phenomenon of having two types of spores by the same plant is called
Answer : Option A
Explaination / Solution:
The phenomenon of having two types of spores by the same plant is called heterospory. Male spores are small ( micro) and female spores are comparatively larger ( macro)than males like Selaginella and Salvinia are heterosporous.
Q2. Photorespiration in plants begins from
Answer : Option B
Explaination / Solution:
Photorespiration in C3 plants start with Phosphoglycolate as primary acceptor in presence of RUBP enzyme to form a two carbon compound and a three carbon compound.
Q3. Female hetrogamety is present in
Answer : Option A
Explaination / Solution:
Female heterogamety is the formation of different types of gametes in female. Although male produce same types of gametes. In birds the female have ZW sex chromosome and male have ZZ sex chromosome.
Q4. Lactic acid produced in muscle is sent to --------------------- to regenerate glucose.
Answer : Option A
Explaination / Solution:
Lactic acid is produced in muscle during insufficient oxygen in muscle cells. Lactic acid produced in muscle is sent to regenerate glucose during rest in presence of sufficient oxygen.
Q5. Tyloses are balloon-like ingrowths in vessels developing from
Answer : Option D
Explaination / Solution:
Tyloses are balloon like in ingrowths in vessels developing from parenchyma cells through the pits of vessel wall of xylem of secondary heartwood.
Q6. Parenchymatous cushion present inside the ovary, where ovules are borne is called
Answer : Option D
Explaination / Solution:
Placenta is the parenchymatous cushion present inside the ovary, ovules are borne. Ovules are attached with ovary at placenta to get nourishment.
Q7. How many numbers of gibberellins are distributed in different organisms?
Answer : Option C
Explaination / Solution:
There are more than 100 gibberellins reported from widely different organisms such as fungi and higher plants. They are denoted as GA1, GA2, GA3 and so on.
Q8. In plant cell, the cytoplasm of the adjacent cells are connected through bridges called
Answer : Option C
Explaination / Solution:
Plasmodesmata is a narrow thread of cytoplasm that passes through the cell walls of adjacent plant cells and allows communication between them.
Q9. Coconut fruit is dispersed by
Answer : Option B
Explaination / Solution:
Coconut is generally grown near water bodies. The seeds of coconut fall in water and float to different places that dispersed the seed.
Q10. Element required for nitrogen metabolism is
Answer : Option C
Explaination / Solution:
Plants obtain it in the form of molybdate ions. It is a component of several enzymes, including nitrogenase and nitrate reductase both of which participate in nitrogen metabolism.
