Agriculture - Online Test
Q1. The substances that have ability to absorb light at different specific wavelength are
Answer : Option B
Explaination / Solution:
Pigments are substances that have an ability to absorb light, at specific wavelengths. The chlorophylla pigment absorb lights of different wavelengths.
Q2. Monoecious flowers contain
Answer : Option D
Explaination / Solution:
Monoecious flowers contain both male and female reproductive parts that are androecium and gynoecium. Androecium produce male gametes and gynoecium produce female gametes.
Q3. The alternate forms of a gene is called
Answer : Option B
Explaination / Solution:
The alternate forms of a gene are called alleles. Each trait is controlled by a pair of alleles.
Q4.
Respiratory Quotient for the reaction
Answer : Option B
Explaination / Solution:
RQ is equal to number of carbon dioxide molecules produced divided by number of oxygen molecules used during respiration. Here, RQ = 57/80 = 0.71.
Q5. Genetic variation is created and inherited during
Answer : Option C
Explaination / Solution:
During sexual reproduction, gamete carrying different genetic combination unit together and variation in offspring is created that is inherited from generation to next generation.
Q6. The type of aestivation shown by the diagram below is
Answer : Option D
Explaination / Solution:
The diagram shows 
which is a vexillary aestivation.
Vexilary aestivation is a mode of aestivation in which one large upper petal folds over, and covers, the other smaller petals, as in most papilionaceous plants.
Q7. Conjoint type of vascular bundles are common in
Answer : Option C
Explaination / Solution:
In conjoint type of vascular bundles,the xylem and phloem are situated at the sameradius of vascular bundles. Such vascularbundles are common in stems and leaves. Theconjoint vascular bundles usually have thephloem located only on the outer side of xylem.
Q8. Which of the following events are arranged in correct order?
Answer : Option C
Explaination / Solution:
Growth, differentiation and development are very closely related events in the life of a plant. Broadly, development is considered as the sum of growth and differentiation.
Q9. A and B are contiguous cells. A has OP=10 atm and TP= 7atm, B has OP=8atm, TP=3 atm, DPD= 5 atm. The result would be
Answer : Option D
Explaination / Solution:
Two cells close to each other are called contiguous cells. Movement of water from one cell to other depends upon Diffusiion pressure deficit (DPD). DPD depends upon osmotic pressure and water pressure. So, movement of water from A to B will take place.
Q10. Element that is necessary for controlling metabolic activities is
Answer : Option A
Explaination / Solution:
Calcium activates certain enzymes and plays an important role in regulating metabolic activities.
