Tag: zoology

Questions Related to zoology

Phtotochemical phase does not includes ________________.

zoology bio-geo chemical cycles in nature nutrient cycles- flow of substances carbon cycle biogeochemical cycles - gaseous

  1. Fixation of ${CO} _{2}$

  2. Release of ${O} _{2}$

  3. Photolysis of water

  4. Formation of ATP and NADPH

Show answer
Correct Option: A
Explanation:

Photochemical phase includes photolysis of water and production of assimilatory power (ATP and NADPH). It liberates O2  during photolysis of water. 

The photochemical phase do not include fixation of CO2.

Chemical reactions triggered by ___________ transforms the organic material into hydrocarbons.

zoology bio-geo chemical cycles in nature nutrient cycles- flow of substances carbon cycle biogeochemical cycles - gaseous

  1. solar energy

  2. hydroelectric

  3. elevated temperatures

  4. decomposition

Show answer
Correct Option: C

What would happen to the person if cerebellum of his brain is damaged?

zoology nervous system of man parts of the brain brain and its parts brain

  1. He will lose his memory power

  2. He will not be able to swallow food properly

  3. He will be unable to coordinate and stand properly

  4. He will lose his powers ofvision and hearing

Show answer
Correct Option: C
Explanation:

Cerebellum is the  part of the brain which is responsible for balancing the body. It helps in coordination of right and left interpretation done by the central nervous system. When the cerebellum, gets damage the coordination between several movements is lost.

So, the correct answer is 'He will be unable to coordinate and stand properly'

Which part of the human brain controls balance, posture and coordination?

zoology nervous system of man parts of the brain brain and its parts brain

  1. Cerebrum

  2. Cerebellum

  3. Medulla oblongata

  4. Thalamus

  5. Hypothalamus

Show answer
Correct Option: B
Explanation:

The cerebellum is a small region at the back of the brain. It is the largest part of hind brain. The cerebellum controls smooth, coordinated movements, helps to maintain muscle tone, posture, and balance.

The brainstem is made up of

zoology nervous system of man parts of the brain brain and its parts brain

  1. Midbrain, Pons, Cerebellum

  2. Midbrain, Pons, Medulla oblongata

  3. Forebrain, Pons, Cerebellum

  4. Cerebellum, Cerebrum, Medulla oblongata

Show answer
Correct Option: B
Explanation:

The region of the brain that connects the cerebrum to the spinal cord is called as brainstem. It is made up of midbrain, medulla oblongata and pons. It is a site where many cranial nerves are located. The brainstem is involved in te relay of signals between the spinal cord and brain. It also controls the working of the PNS. Thus the correct answer is option B.

Animal requiring minimum amount of water to produce urine are?

zoology animal diversity - ii (phylum: chordata) circulatory system in frog frog - digestive system, circulatory system, excretory system and reproductive system frog

  1. Ureotelic

  2. Ammoniotelic

  3. Uricotelic

  4. Chemotelic

Show answer
Correct Option: A

When frog is submerged

zoology frog circulatory system in frog frog - digestive system, circulatory system, excretory system and reproductive system animal diversity - ii (phylum: chordata)

  1. Its heartbeat rate increases

  2. Its heartbeat rate decreases

  3. There is no change in heartbeat rate

  4. There is tachycardia

Show answer
Correct Option: A

__________ are said to be cold blooded animals.

zoology animal diversity - ii (phylum: chordata) circulatory system in frog frog - digestive system, circulatory system, excretory system and reproductive system frog

  1. Tiger

  2. Cat

  3. Frog

  4. Rabbit

Show answer
Correct Option: C
Explanation:

Animals can be distinguished in to cold blooded and warm blooded based on their body temperatures. Cold blooded animals can adjust their body temperature depending on their environment.

During breeding season, nuptial pad is found in the thumb of

zoology frog circulatory system in frog frog - digestive system, circulatory system, excretory system and reproductive system animal diversity - ii (phylum: chordata)

  1. Male frog

  2. Female frog

  3. Both of these

  4. None of these

Show answer
Correct Option: A
Explanation:

Frog exhibit sexual dimorphism. Male and female are distinguishable externally only during breeding season when the male develop roughed nuptial pads on the bases of the thumb. Nuptial pads help male in holding female, a sexual embrace called am plexus.

In frog, the pancreas produces

zoology animal diversity - ii (phylum: chordata) circulatory system in frog frog - digestive system, circulatory system, excretory system and reproductive system frog

  1. Two digestive enzymes, one hormone

  2. Three digestive enzymes, one hormone

  3. Three digestive enzymes, two hormones

  4. Three digestive enzymes, three hormones

Show answer
Correct Option: B
Explanation:

In frog, pancreas is made up of lobules, connective tissue and islets of langerhans. The islets of Langerhans secrete a hormone known as insulin. The pancreatic juice contains three enzymes. The trypsin, amylopsin and stoop sin or lipase.