General Science - Online Test
Q1. Which of the following arise from endoderm?
Answer : Option B
Explaination / Solution:
Human body is triploblastic, having three layered embryo. The outer layer is called ectoderm, the middle layer is called mesoderm and inner most layer is called endoderm that forms lungs and other vital organs.
Q2. The linear shape of is due to _________.
Answer : Option C
Explaination / Solution:
In () hybridisation of C is sp so due to pЛ –pЛ bonding it is linear. Further carbon is sp hybridised, and have linear structure.
Q3. Drawing conclusion from the data analyzed is the stage of
Answer : Option A
Explaination / Solution:
No Explaination.
Q4. Statement I: When more than one adaptive radiation appeared in isolated geographical area it called a convergent evolution.
Statement II: Bats and birds are example of adaptive radiation.
Statement III: Tiger cat, kangaroo, wombat and sugar gliders are example of Australian marsupials.
Statement II: Bats and birds are example of adaptive radiation.
Statement III: Tiger cat, kangaroo, wombat and sugar gliders are example of Australian marsupials.
Answer : Option B
Explaination / Solution:
When more than one adaptive radiation appeared in isolated geographical area it called a convergent evolution. Tiger cat, kangaroo, wombat and sugar gliders are example of Australian marsupials.
Q5. First test-tube baby born in July,1978 was
Answer : Option C
Explaination / Solution:
First test-tube baby was born in July,1978 named Louise Brown. Test tube baby programme involve in vitro fertilisation of ovum and transplanting it in fallopian tube or uterus.
Q6. Gel electrophoresis is used for
Answer : Option A
Explaination / Solution:
Gel electrophoresis is used to separate macromolecules like DNA, RNA and proteins. DNA fragments are separated according to their size and proteins can be separated according to their size and their charge (different proteins have different charges) to study the genome of individual organism.
Q7. The embryo development from the somatic cells is called
Answer : Option A
Explaination / Solution:
Embryo develops from the fusion of sperm and ovum. The zygote divides mitotically to form embryo. Sometimes other somatic diploid cells act as embryo. They are called embryoid.
Q8. The reason for small radius of Ga compared to Al is _______.
Answer : Option C
Explaination / Solution:
due to screening effect size of Ga< Al as in Ga d-electrons are present which have poor shielding effect so nuclear charge increases and size decreases.
Q9. Which of the following will give qualitative data
Answer : Option C
Explaination / Solution:
No Explaination.
Q10. Assertion: When migration of a section of population to another occurs, gene frequencies change in the original as well as in the population.
Reason: There would be a gene flow if this gene migration happens multiple times.
Reason: There would be a gene flow if this gene migration happens multiple times.
Answer : Option C
Explaination / Solution:
gene flow (also known as gene migration) is the transfer of genetic variation from one population to another. If the rate of gene flow is high enough, then two populations are considered to have equivalent genetic diversity and therefore effectively a single population.
