Biology - Online Test
Q1. Absorption of fats takes place through :
Answer : Option C
Explaination / Solution:
Lymph are the extracellular fluid that constitute the lymphatic system in human body. Absorption of fats takes place through lymphatic ducts. As fats cannot be carried through narrow capillaries.
Q2. Suddenly any person gets rid of Alcohol or drug then which kind of deficiency occurs in that person?
Answer : Option D
Explaination / Solution:
When a person suddenly stops taking alcohol or drug than he may develop deficiency syndrome called visual syndrome in person accommodating power decrease suddenly. Cry-du-chat syndrome is a genetic disease.
Q3. Reticular activating system (RAC) of brain :
i. it works as a bridge to connect the lower brain to the upper brain.
ii. it helps usto focus on the important things and evade the useless things.
i. it works as a bridge to connect the lower brain to the upper brain.
ii. it helps usto focus on the important things and evade the useless things.
Answer : Option D
Explaination / Solution:
Reticular activating system (RAC) of brain works as a bridge to connect the lower brain to the upper brain. It helps to focus on the important things and evade useless things.
Q4. The structure formed by germinated fern spore is
Answer : Option A
Explaination / Solution:
Fern spores germinate to give rise to inconspicuous, small but multicellular, free-living, mostly photosynthetic thalloid gametophytes called prothallus.The gametophytes bear male and female sex organs called antheridia and archegonia.
Q5. Cytoskeleton is made of
Answer : Option D
Explaination / Solution:
An elaborate network of filamentous proteinaceous structures present in the cytoplasm is collectively referred to as the cytoskeleton.
Q6. During translation initiation in prokaryotes, a GTP molecule is needed in
Answer : Option A
Explaination / Solution:
During translation initiation in prokaryotes, a GTP molecule is required along with 30S ribosome, m-RNA with formyl-met-t-RNA. GTP provides energy and ribosomes provide site for translation.
Q7. On excitation, the electrons picked up by an electron acceptor is passed to
Answer : Option B
Explaination / Solution:
Electrons become excited and jump into an orbit farther from the atomic nucleus. These electrons are picked up by an electron acceptor which passes them to an electrons transport of cytochrome.
Q8. In CNS, regulation of respiratory rhythm during normal breathing is largely dependent upon :
Answer : Option D
Explaination / Solution:
In central nervous system, regulation of respiratory rhythm during normal breathing is dependent upon concentration of carbon dioxide gas in air.
Q9. For converting an inferior local breed into superior breed, cross breeding with the same types of superior bull is required for
Answer : Option B
Explaination / Solution:
Local inferior breed of cow is changed into superior breed by Hybridisation methods. In this method superior bull is required to breed for 6-7 generations to get desired traits.
Q10. Sanctuaries, national parks & biosphere reserves are examples of :
Answer : Option D
Explaination / Solution:
In situ conservation is the conservation of organisms in their natural geographic regions by providing protection from poaching, cutting or other similar activities. In sanctuaries, national parks and biosphere reserves organisms are kept in natural habitat.
