CBSE Class 7 Science - MCQ and Online Tests - Unit 1 - Nutrition in Plants

CBSE Class 7 Science – MCQ and Online Tests – Unit 1 – Nutrition in Plants

 

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CBSE Class 7 Science – MCQ and Online Tests – Unit 1 – Nutrition in Plants

Choose the correct answer:

Question 1.
The end products of photosynthesis are
(a) carbohydrates, oxygen
(b) carbohydrates, hydrogen
(c) carbohydrates, water vapours
(d) carbohydrates, oxygen and water vapours

Answer

Answer: (a) carbohydrates, oxygen

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Question 2.
Which one of the following is a pair of symbiotic organisms?
(a) Lichens
(b) Rhizobium and a legume
(c) None of these
(d) Both (a) and (b)

Answer

Answer: (d) Both (a) and (b)

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Question 3.
Which part of the plant is called its food factory ?
(a) Fruits
(b) Seeds
(c) Leaves
(d) Flowers

Answer

Answer: (c) Leaves

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Question 4.
Tiny pores present on the surface of leaves through which gaseous exchange occurs are called
(a) stomata
(b) guard cells
(c) food holes
(d) gas holes

Answer

Answer: (a) stomata

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Question 5.
Which of the following is a nutrient?
(a) Protein
(b) Fat
(c) Vitamin
(d) All of these

Answer

Answer: (d) All of these

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Question 6.
What is the ultimate source of energy for all living organisms?
(a) Water energy
(b) Wind energy
(c) Solar energy
(d) Chemical energy

Answer

Answer: (c) Solar energy

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Question 7.
Green pigment present in the leaves is called
(a) haemoglobin
(b) globulin
(c) albumin
(d) chlorophyll

Answer

Answer: (d) chlorophyll

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Question 8.
During photosynthesis plants
(a) take oxygen and release carbon dioxide
(b) take carbon dioxide and release oxygen
(c) take carbon dioxide but do not release oxygen
(d) take oxygen but do not release carbon dioxide

Answer

Answer: (b) take carbon dioxide and release oxygen

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Question 9.
During photosynthesis
(?) solar energy is converted into chemical energy
(b) solar energy is converted into mechanical energy
(c) chemical energy is converted into mechanical energy
(d) bioenergy is converted into chemical energy

Answer

Answer: (?) solar energy is converted into chemical energy

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Question 10.
The raw materials for photosynthesis are
(?) CO₂
(b) CO₂, O₂, H₂
(c) N₂ water
(d) O₂ water

Answer

Answer: (?) CO₂

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Question 11.
Which of the following is an insectivorous plant?
(a) Pitcher plant
(b) Indian telegraph plant
(c) 4 ‘O’clock plant
(d) Cuscuta

Answer

Answer: (a) Pitcher plant

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Question 12.
Which one of the following is a parasite?
(a) Lichen
(b) Cuscuta
(c) Pitcher plant
(d) Rhizobium

Answer

Answer: (b) Cuscuta

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Question 13.
Which of the following class of organisms belongs to saprotrophs?
(a) Fungi
(b) Algae
(c) Lichens
(d) Bryophytes

Answer

Answer: (a) Fungi

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Question 14.
Human beings can be categorised as
(a) heterotrophs
(b) autotrophs
(c) parasites
(d) saprotrophs

Answer

Answer: (a) heterotrophs

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Question 15.
The food making process in plants is called as
(a) glycolysis
(b) photosynthesis
(c) photolysis
(d) chemosynthesis

Answer

Answer: (b) photosynthesis

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