Agriculture - Online Test
Q1. Which one is not a phase of Growth
Answer : Option D
Explaination / Solution:
Growth phase consists of leg phase, exponential phase and stable phase. It do not consist of linear phase.
Q2. Which of the following is not method of asexual reproduction
Answer : Option A
Explaination / Solution:
Conjugation is the mode of sexual reproduction in amoeba and some other Moneras. Cutting, grafting and budding are the mode of asexual reproduction without gametes formation.
Q3. Select the correct equation from the following
Answer : Option C
Explaination / Solution:
Water potential of a cell is affected by both solute and pressure potential. The relationship between them is as follows:
Q4. The cleavage of the zygote or earlier stage of its development into two or more units to form many embryo is called as
Answer : Option B
Explaination / Solution:
Zygote may divides into two or more parts to develop multiple embryos. The formation of more than one embryo inside the same ovule by cleavage is called cleavage polyembryony.
Q5. Which one is prerequisite for nitrogen fixation?
Answer : Option B
Explaination / Solution:
During nitrogen fixation atmospheric nitrogen is converted into nitrates and nitrites. When deficiency of nitrate occurs in soil, nitrogen fixation occurs. So, nitrate deficiency is prerequisite for nitrogen fixation.
Q6. Which plant division is known as amphibians of the plant kingdom?
Answer : Option B
Explaination / Solution:
Bryophytes are also called amphibians of the plant kingdom because these plants can live in soil but are dependent on water for sexual reproduction as they release antherozoids into water where they come in contact with archegonium to produce zygote.
Q7. Hill reaction requires
Answer : Option A
Explaination / Solution:
The light dependent transfer of electrons by chloroplasts in photosynthesis that results in the cleavage of water molecule and liberation of oxygen is called Hill reaction. Hill reaction required ferrricynide.
Q8. Which among the following occurs in pair?
Answer : Option B
Explaination / Solution:
Both gene and chromosome occurs in pair and segregate during gamete formation by reduction division or meiosis.
Q9. Electron transport system take place in
Answer : Option B
Explaination / Solution:
The metabolic pathway through which the electron passes from one carrier to another, is called the ETS and it is present in the inner mitochondrial membrane.
Q10. A scar on the seed coat through which the developing seeds were attached to the fruit is called
Answer : Option C
Explaination / Solution:
The hilum is a scar on the seed coat through which the developing seeds were attached to the fruit.
