Control And Coordination Class 10 Science Assignment Pdf
Class 10 Science students should refer to the following printable assignment in Pdf for Control And Coordination in standard 10. This test paper with questions and answers for Grade 10 Science will be very useful for exams and help you to score good marks
Class 10 Science Assignment for Control And Coordination
Question. Which is/are correct correct about insulin?
(a) It controls blood sugar.
(b) It is produced by islets of Langerhans.
(c) It is produced by parathyroid gland.
(d) It is called the fight and flight hormone.
Answer : A , B
Question. Gustatoreceptors lie
(a) on the tongue
(b) in the nose
(c) in the ear
(d) in the eyes
Answer : A
Question. Gigantism results from
(a) growth hormone
(b) thyroxine
(c) adrenalin
(d) testosterone
Answer : A
Question. Synaptic terminal is the end of
(a) cyton
(b) dendrite
(c) axon
(d) none of the above
Answer : C
Question : Which Plant hormone essential for cell division ?
a. ethylene
b. gibberellins
c. auxin
d. cytokinin
Answer : D
Question : Name the place where largest number of neurons are found in the human body.
a. Stomach
b. Heart
c. Brain
d. Lungs.
Answer : C
Question : Auxins are
a. Vitamins
b. Enzymes
c. Proteins
d. Hormones
Answer : D
Question : The substance that cause fall of mature leave and fruits from plants is due to:
a. auxin
b. gibberllin
c. cytokinin
d. ABA
Answer : D
Question : Which hormone cause uterine contraction that leads to labour pain?
a. vasopressin
b. thyroxin
c. Estrogen
d. Progesterone
Answer : D
Mark the statements true(T) or false(F).
Question. Ovaries produce only one hormone.
Answer : false
Question. Spinal cord arises from the medulla.
Answer : true
Question. Human brain and spinal cord are solid.
Answer : false
Fill in the blanks.
Question. Cerebellumis the centre of ...... action and cerebrum controls ...... .
Answer : involuntary, intelligence
Question. The pituitary gland lies on ...... .
Answer : diencephalon
Question. In a nerve cell, ...... receive the stimulus and ...... transmits the impulse.
Answer : dendrons, axon
Question. ...... is the master gland.
Answer : Pituitary
Match the columns.
A B
(i) Diencephalon (a) Coordinating cerebellum and cerebrum
(ii) Spinal nerves (b) Rapid loss of water
(iii) Algesireceptors (c) Apical meristem
(iv) Pons (d) Controls hunger, thirst
(v) Auxin (e) Feeling of pain
(vi) Turgor change (f) 31 pairs
Answer : (i)(d) (ii)(f) (iii)(e) (iv)(a) (v)(c) (vi)(b)
Very Short Answer
Question. Name the hormone which is associated with the metabolism of carbohydrates, proteins, calcium and phosphorus.
Answer: Thyroxine.
Question. Why do living organisms show movement?
Answer: To use changes in the environment to their advantage.
Question. What are the functions of the Hypothalamus?
Answer: Hypothalamus regulates the secretion of hormones from pituitary gland.
Question. Why are endocrine glands called ductless glands?
Answer: Endocrine glands are called ductless glands because they do not have any external duct to discharge their secretions into the blood stream.
Question. Where hypothalamus gland is located?
Answer: Hypothalamus gland is located in the brain.
Question. Give an example of a plant hormone that promotes its grow th. W’here is it synthesized?
Answer: Auxin promotes growth. It is synthesised at the shoot tip of the plant body.
Question. Mention the part of the body where gustatory and olfactory receptors are located.
Answer: Gustatory receptors are located in Cerebrum of fore-brain. Olfactory receptors are located in Olfactory lobe of fore-brain.
Question. Name the part of the brain which is concerned with muscular coordination in the body.
Answer: Cerebellum.
Question. Which part controls the voluntary actions?
Answer: Cerebrum of fore-brain.
Question. Why hormones are called as ‘chemical messengers’ ?
Answer: Hormones are carried in the blood streams to all parts of the body, so they are called ‘chemi¬cal messengers’.
Question. Name one plant growth hormone which retards growth during extremely dry season.
Answer: Abscisic acid
Question. What are endocrine glands?
Answer: Ductless glands which manufacture hormones and secrete them directly into the blood stream.
Question. Name the glands which secrete estrogen and progesterone.
Answer: Ovaries
Short Answer
Long Answer
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