Zoology - Online Test
Q1. Diversity can be promoted by:
Answer : Option C
Explaination / Solution:
The species that predominates in an ecological community, particularly when they are most numerous or form the bulk of the biomass.
Diversity can be promoted by dominant species. Dominant species of an ecosystem determine the way of diversity which may be linear or diverse.
Q2. A person accidentally got his adrenal gland injured. He died & reports will probably reveal that death was caused due to :
Answer : Option B
Explaination / Solution:
Adrenal cortex is situated along the perimeter of the adrenal gland. The adrenal cortex mediates the stress response through production of aldosterone and cortisol. If a person got injured his adrenal gland may die due to loss of stress response which will be reveled in report.
Q3. Which phylum has comb plates for locomotion as their distinctive feature?
Answer : Option B
Explaination / Solution:
The body of phylum Ctenophora bears eight external rows of ciliated comb plates, which help in locomotion
Q4. Primary germ layers are
Answer : Option A
Explaination / Solution:
Development of fetus start from zygote divisions to form embryo. The embryo undergoes multiple divisions to form blastocysts that arrange into layers. The primary layers are ectoderm, mesoderm and endoderm.
Q5. Which of the following carries the hereditary information from parents to progeny?
Answer : Option C
Explaination / Solution:
Nucleic acids carry hereditary information and are passed on from parental generation to progeny.
Q6. Organism like Escherichia coli and Chlamydia trachomatis fall into which domain?
Answer : Option D
Explaination / Solution:
Escherichia coli and Chlamydia trachomatis fall into which Bacteria family. Bacteria can live in all kind of environment like air, water and soil including inside the body of plants and animals as parasite.
Q7.
Match the following:
column A
a) Atherosclerosis
b) Haemorrhage
c) Heparin
d) Polycythemia
column B
i) Hypotension
ii) High blood pressure
iii) Abnormal increase in RBC count
iv) Anticoagulant
Answer : Option B
Explaination / Solution:
Antherosclerosis leads to high blood pressure, haemorrhage causes hypotension, heparin is used as anticoagulant and polycythemia causes abnormal increase in RBC count.
Q8.
ECOSAN (compost toilets) is about
(i) minimising unnecessary water use
(ii) household and personal hygiene
(iii) maximising recycling and reuse at domestic level of grey water
Answer : Option C
Explaination / Solution:
Ecological sanitation (Ecosan) is a concept that treats various types of waste generated by us as a resource which can be safely collected, treated and reused to prevent pollution of water bodies and the environment.
It minimize unnecessary water use, house hold and personal hygiene and maximizing recycling and reuse at domestic level of grey water.
Q9. Small disc like structures that occur in the centromere are
Answer : Option A
Explaination / Solution:
Small disc-shaped structures at the surface of the centromeres are called kinetochores. These structures serve as the sites of attachment of spindle fibres (formed by the spindle fibres) to the chromosomes.
Q10. The palindromic sequence out of the given options is
Answer : Option D
Explaination / Solution:
Palindromic sequence is the sequence which reads same from left to write or from right to left. MADAM is an example of palindromic sequence.
