Biology - Online Test
Q1. The experiment to show the production of mice in 21 days from a dirty shirt placed in Contact with kernels of wheat was carried out by ______.
Answer : Option C
Explaination / Solution:
The first experiments to prove the spontaneous generation theory were done in the XVII century and a doctor called Jean Baptiste Van Helmont declared he had performed a unique experiment: he placed a dirty shirt together with some wheat and according to him, mice were born 21 days later.
According to the Doctor the sweat in the shirt was the active element which gave life to the inert matter.
Q2. In monocotyledons, guard cell of stomata areThe figure given below is the apical meristem in root. Identify ‘A’ in the diagram.
Answer : Option D
Explaination / Solution:
The part ‘A’ is protoderm in apical meristem of root.
Q3. Which growth is also called apparent growth?
Answer : Option D
Explaination / Solution:
Irreversible increase in mass or volume of plant part is called apparent growth. Apparent growth is permanent and cannot be reversed back as it occurs due to increase in cell number.
Q4. Which of the following statement is correct with respect to nomenclature?
Answer : Option D
Explaination / Solution:
All of the these are the universal rules of binomial nomenclature. Hence, the correct option is All of the above.
Q5. Read the following statements about muscle contraction in humans :
i. chemical energy is converted into mechanical energy during muscle contraction and the chemical is a neurotransmitter.
ii. a neurotransmitter acetylcholine at motor end plate converts electrical energy into mechanical energy.
iii. in a contracted muscle, volume remains the same.
iv. a contracted muscle becomes shorter and thicker.
i. chemical energy is converted into mechanical energy during muscle contraction and the chemical is a neurotransmitter.
ii. a neurotransmitter acetylcholine at motor end plate converts electrical energy into mechanical energy.
iii. in a contracted muscle, volume remains the same.
iv. a contracted muscle becomes shorter and thicker.
Answer : Option A
Explaination / Solution:
The chemical energy is converted into mechanical energy during muscle contraction and the chemical is a neurotransmitter. In a contracted muscle, volume remains the same and a contracted muscle becomes shorter and thicker.
Q6. ELISA is
Answer : Option D
Explaination / Solution:
An enzyme-linked immunosorbent assay, also called ELISA or EIA, is a test that detects and measures antibodies in your blood. This test can be used to determine if you have antibodies related to certain infectious conditions. It is used to detected the disease at early stage.
Q7. What is meant by RCH care?
Answer : Option B
Explaination / Solution:
RCH stands for reproductive and child health care. RCH deals with all problems related to healthy reproductive life, problems related to care during pregnancy and care of child after the birth with their immunization programme.
Q8. Difference between osmotic pressure is
Answer : Option D
Explaination / Solution:
Difference between osmotic pressure is called diffusion pressure deficit (DPD). It is the reduction of diffusion pressure of water in solution or cell over its pure state due to presenceof solute.
Q9. Adipose tissue belongs to which tissue?
Answer : Option C
Explaination / Solution:
The connective tissues have soft tissues to specialised types, which include cartilage, bone, adipose, and blood.
Q10. Classification and studies based on chemical constituents of organism is called
Answer : Option D
Explaination / Solution:
Merriam-Webster defines chemotaxonomy as the method of biological classification based on similarities in the structure of certain compounds among the organisms being classified.
Two organisms morphologically similar to each other are classified on the basis of chemotaxonomy.
