Tag: control of blood glucose

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Multiple choice biology control and co-ordination in plants and animals control of blood glucose hormones in human reproduction testes and ovary

Growth Hormone is secreted by

  1. Pineal Body

  2. Pituitary Gland

  3. Pancreas

  4. Parathyroid Gland
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Growth hormone (GH), also called somatotropin or human growth hormone, peptide hormone secreted by the anterior lobe of the pituitary gland. It stimulates the growth of essentially all tissues of the body, including bone.

Multiple choice biology plant growth control of blood glucose hormones in human reproduction testes and ovary

Match the Column-I & Column-II.

(i) Auxin (A) Ripening of fruit
(ii) ABA (B) Bolting
(iii) Gibberellin (C) Sensitivity against adverse conditions
(iv) Ethephon (D) parthenocarpy in tomato

  1. i-C, ii-D, iii-B, iv-A

  2. i-D, ii-C, iii-A, iv-B

  3. i-D, ii-C, iii-B, iv-A

  4. i-A, ii-C, iii-B, iv-D
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

  • (i) Auxin - (D) parthenocarpy in tomato -Auxins are generally produced by the growing apices of the stems and roots, from where they migrate to the regions of their action. Auxins also induce parthenocarpy in
tomatoes. 
  • (ii) ABA - (C) Sensitivity against adverse conditions -ABA(Abscisic acid) acts as a general plant growth inhibitor and an inhibitor of plant metabolism.ABA regulates sensitivity against adverse conditions i.e ABA stimulates the closure of stomata in the epidermis and increases the tolerance of plants to various kind of stresses. Therefore, it is also called the stress hormone.
  • (iii) Gibberellin - (B) Bolting -Gibberellins promotes bolting
(internode elongation just prior to flowering) in beet, cabbages and many
plants with rosette habit.
  • (iv) Ethephon - (A) Ripening of fruit - Ethephon in an aqueous solution is readily absorbed and transported within the plant and releases ethylene slowly. Ethephon hastens fruit ripening in tomatoes and apples.
  • So, the correct answer is 'i-D, ii-C, iii-B, iv-A'.

Multiple choice biology control and co-ordination in plants and animals control of blood glucose hormones in human reproduction testes and ovary

Myelin sheath is covering of

  1. Muscle cells

  2. Axon of neurons

  3. Blood vessels

  4. Osteocytes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A neuron can be defined as a long cytoplasmic process of the cell body, which transmits the impulse from the cell body to other neurons is termed. The axon is covered by a lipid-rich membrane, called myelin sheath. The myelin sheath is formed by Schwann cells and each Schwann cell covers a part of the axon.
Thus, the correct answer is the option (B), 'Axon of neurons'.

Multiple choice biology excretory system of human control of blood glucose parts of the brain kidney

Nitrogenous wastes can be removed from the body by

  1. Urinary system

  2. Lymphatic system

  3. Circulatory system

  4. Respiratory system

  5. Integumentary system
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The urinary system produces urine (nitrogenous water) and serves to excrete it to outside the body. Lymphatic system serves in fluid balance, fat absorption and defense. The circulatory system serves in exchange of nutrients and oxygen for waste and carbon dioxide respectively. Respiratory system serves to allow entry of oxygen from the air into blood and exit of carbon dioxide from blood to the air. The integumentary system covers the entire surface of the human body and serves as a barrier, site for waste elimination and temperature control. 

So, the correct answer is option A.

Multiple choice zoology nervous system of man control of blood glucose parts of the brain kidney

The human hind brain comprises of three parts, which one of these belongs to hind brain?

  1. Cerebellum

  2. Hypothalamus

  3. Spinal cord

  4. Corpus callosum
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The hindbrain is the lowermost or rearmost region of the brain that bridges the brain with the spinal cord and includes the medulla oblongata, pons and cerebellum. It is also called the rhombencephalon.  

So, the correct answer is 'Cerebellum'

Multiple choice zoology nervous system of man control of blood glucose parts of the brain kidney

Arbor vitae is present in 

  1. Cerebellum

  2. Cerebrum

  3. Diencephalon

  4. Optocoel
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Arbor vitae which is the largest white matter present in the center of the cerebellum. It is so called for its branched, tree-like appearance. It is important in the coordination of the arms, legs and any actions requiring hand-eye coordination. Hence, the correct answer is option A.

Multiple choice zoology nervous system of man control of blood glucose parts of the brain kidney

Arobor vitae is a part of

  1. Cerebrum

  2. Cerebellum

  3. Midbrain

  4. Forebrain
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The arbor vitae is the cerebellar white matter, so called for its branched, tree-like appearance. It resembles a fern and is present in both cerebellar hemispheres. It brings sensory and motor information to and from the cerebellum. It is located deep in the cerebellum. So, the correct answer is option B.

Multiple choice zoology nervous system of man control of blood glucose parts of the brain kidney

Which of the following is true about cerebrum?

  1. It is poorly developed in humans

  2. It consists of two hemispheres, left and right

  3. It controls the pituitary gland

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cerebrum is the largest part of the brain and well developed in humans. It plans, thinks, judges, and organised speech and information. It consists of two hemispheres, left and right connected by corpus callosum. 

Pituitary gland is controlled by hypothalamus.
So, the correct answer is 'It consists of two hemispheres, left and right'.