Zoology - Online Test
Q1. A functional G-Actin molecule in its free state is bound to :
Answer : Option A
Explaination / Solution:
A functional G-actin molecule in its free state is bound to magnesium ion and ATP. G-actin molecule forms a bridge between the muscle fibres for sliding.
Q2. RNAi is used to produce resistance against the nematode
Answer : Option D
Explaination / Solution:
RNA interference (RNAi) is present in all eukaryotic organisms as a method of cellular defense.
When Meloidogyne incognita (parasite) consumes cells with RNAi gene, parasite cannot survive and this prevents infestation. The introduced RNAi gene DNA forms both sense and anti-sense RNA. Two strands being complementary to each other bend and form ds RNA, leading to RNAi. Thus, the mRNA of nematode is silenced and the parasite cannot survive there.
Q3. Indian population is
Answer : Option D
Explaination / Solution:
The Indian population is young population as large number of population belongs to age group of 35 to 50 years.
Q4. Which one of the following is not a connective tissue?
Answer : Option B
Explaination / Solution:
Blood, bone, lymph forms the connective tissue that connects the different parts of the body
Nerve cells are parts of neural system or nervous system that transmit information from one part of the body to others.
Q5. Who was the earliest to attempt a more scientific basis for classification?
Answer : Option A
Explaination / Solution:
Aristotle was the earliest to attempt a more scientific basis for classification. He used simple morphological characters to classify plants into trees, shrubs and herbs.
Q6. The largest endocrine gland is
Answer : Option B
Explaination / Solution:
Thyroid is the largest endocrine gland present in human body. This gland release thyroxin hormone that help in metabolism of carbohydrates, fats and proteins.
Q7. Any habitat can support growth of limited number of individuals only called:
Answer : Option C
Explaination / Solution:
Carrying capacity of a habitat is the maximum number of individual that can survive in given habit. There is a limitation of food, water and space in a habitat so only limited numbers of individual survive.
Q8. All are digestive glands except :
Answer : Option B
Explaination / Solution:
The thyroid is part of the endocrine system, which is made up of glands that produce, store, and release hormones into the bloodstream so the hormones can reach the body's cells.
The thyroid gland uses iodine from the foods you eat to make two main hormones:
Triiodothyronine (T3) Thyroxine (T4)
Q9. From what Lysergic acid is formed?
Answer : Option C
Explaination / Solution:
Lysergic acid is formed by ergot fungi. Ergot fungi refers to a group of fungi of genus Claviceps. The most common is Clevicepspurpuea. It cause ergotism in man and other mammals.
Q10.
Match the following :
| Column A | Column B |
| a) Motor Neuron | i) carry impulse away from cyton |
| b) Axon | ii) carry impulse from receptor to CNS |
| c) Afferent Neuron | iii) carry impulse towards cyton |
| d) Dendrite | iv) carry impulse from CNS to effector |
Answer : Option C
Explaination / Solution:
Motor neuron carry impulse from CNS to effector. Axon carry impulse away from cyton. Afferent neuron carry impulse from receptor to CNS and dendrite carry impulsetowards cyton.
