Control and Coordination | Chapter Assessment | English | Grade 10

Choose incorrect option from following.

• Adrenaline : Pituitary gland

• Testosterone: Testes

• Estrogen : Ovary

• Thyroxin : Thyroid gland

Answer explanation

Adrenaline hormone is secreted by adrenal gland and growth hormone is secreted by the pituitary gland. Hence option 1 is mis matched pair.

Tags

NGSS.HS-LS1-3

Which of the following controls the Involuntary actions in the body?

• medulla in fore brain

• medulla in midbrain

• medulla in hindbrain

• medulla in spinal cord

Answer explanation

Medulla controls involuntary actions and medulla is present hindbrain Hence option 3 is correct answer

Excess secretion of growth hormone causes __________

• Dwarfism

• Gigantism

• Both 1 and 2

• None of these

Answer explanation

Excess secretion of growth hormone causes gigantism whereas less secretion of growth hormone causes dwarfism.

Find odd one out.

• Adrenal

• Testes

• Pituitary

• Ovary

Answer explanation

All are endocrine glands but pituitary are unpaired and present just below the brain. All other glands are paired.

Tags

NGSS.MS-LS3-2

What is the reason of the movement of sunflower in accordance with the path of sun?

• phototropism

• geotropism

• chemotropism

• hydrotropism

Answer explanation

The movement of sunflower in accordance with the path of sun is due to phototropism.

Tags

NGSS.MS-LS1-5

Secretion of ___________ causes dramatic changes of body features associated with puberty.

• oestrogen from testes and testosterone from ovary

• oestrogen from adrenal gland and testosterone from pituitary gland

• testosterone from testes and oestrogen from ovary

• testosterone from thyroid gland and oestrogen from pituitary gland

Answer explanation

Testosterone hormone is secreted by testes and estrogen hormone is secreted from ovary which causes changes of body features associated with puberty.

Endocrine glands are responsible for _______.

• Synthesis of hormones

• Secretion of hormones

• Both 1 and 2

• Neither 1 nor 2

Answer explanation

Endocrine glands performs synthesis and secretion of hormones. Endocrine glands are Pineal gland, Pituitary gland, Hypothalamus, Thyroid gland, Parathyroid gland, Thymus, Pancreas, Adrenal gland, Ovaries, Testes.

Tags

NGSS.HS-LS1-3

Which of the following secretes growth hormone?

• Pituitary gland

• Testes and ovaries

• Pineal glands

• None of these

Answer explanation

Pituitary gland secretes growth hormone, which stimulates growth in all organs of the body.

Manju is unable to hear properly. Which of the following receptors must be checked and concerned with given problem?

• Olfactory receptors

• gustatory receptors

• Thermoreceptors

• Auditory receptors

Answer explanation

Auditory receptors are associated with ears and hearing. Hence option 4 is correct answer.

Tags

NGSS.MS-LS1-8

What is the difference between the plants in the given figure?

• Plant A has more auxin than plant B

• Plant A has more gibberellins than plant B.

• Plant A has less auxin than plant B

• Plant A has less gibberellins than plant B.

Answer explanation

Gibberellins causes growth of stem in plants. As plant A has more gibberellins hence stem of it is thicker as compared to plant B.

Tags

NGSS.MS-LS1-5