Agriculture - Online Test
Q1. During cellular respiration, pyruvic acid is reduced to lactic acid in the presence of
Answer : Option C
Explaination / Solution:
Lactate dehydrogenase: (LDH) An enzyme that catalyzes the conversion of lactate to pyruvate When oxygen is inadequate for cellular respiration.
This is an important step in energy production in cells. Many different types of cells in the body contain this enzyme. Some of the organs relatively rich in LDH are the heart, kidney, liver, and muscle.
Q2. Select the insectivorous plant from the following.
Answer : Option B
Explaination / Solution:
Those plants that eats insect to fulfill its protein requirement are called insectivorous plants. They have modified leaves to capture insects. Drosera is an insectivoresous plant.
Q3. Tracheids differ from vessels in having
Answer : Option D
Explaination / Solution:
Tracheids and vessels are main water and mineral conducting tissues of xylem. Tracheid have pointed tips but vessels have blunt ends.
Q4. The point at which exponential phase ends and decelerating phase begins is called
Answer : Option D
Explaination / Solution:
An inflection point is a point on a curve at which the sign of the curvature (i.e., the concavity) changes. Inflection points may be stationary points, but are not local maxima or local minima.
For example, for the curve plotted given, the red point is an inflection point.
Q5. Flagellated, motile asexual reproductive structure are called
Answer : Option A
Explaination / Solution:
A number of simple organism produce single or multi-flagellated spores called zoospores. Water is essential for this mode of reproduction. Aplanospores are non-flagellated spores.
Q6. The molecules which move from higher to lower regions are called as
Answer : Option C
Explaination / Solution:
In diffusion, molecules move in a random fashion, the net result being substances moving from regions of higher concentration to regions of lower concentration.
Q7. Those essential element which occur in 1-10 mg/g of dry matter are
Answer : Option A
Explaination / Solution:
The nutrient required in larger quantity is called macronutrients. Those essential elements which occur in 1-10mg/g quantity is called macronutrients.
Q8. The algae that secretes and deposit calcium carbonate over their walls to contribute in producing coral reefs is
Answer : Option C
Explaination / Solution:
Red algae in the order Corallinales , characterized by a thallus that is hard because of calcareous deposits which contribute in producing coral reefs in sea water.
Q9. What does represent in plant photosynthesis?
Answer : Option D
Explaination / Solution:
The key features of plant photosynthesis were known, namely, that plants could use light energy to make carbohydratesfrom and water, where represents glucose.
Q10. A person with unknown blood group under ABO system has suffered much blood loss in an accident and needs immediate blood transfusion. His one friend, who has a valid certificate of his own blood type, offers for blood donation without delay. What would have been the type of blood group of the donor friend?
Answer : Option D
Explaination / Solution:
A person with unknown blood group under ABO grouping should be given Type O blood group as O is universal donor and can be transfused to any person.
