NSO Level 1- Science Olympiad (SOF) Class 7: Questions 142 - 145 of 593

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Question number: 142

» Physical and Chemical Changes

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MCQ▾

Question

Refer the given figure. It depicts

Given Figure Depicts

Given Figure Depicts

Given Figure Depicts

Choices

Choice (4) Response

a.

Symbiotic nutrition

b.

Saprotrophic nutrition

c.

Parasitic nutrition

d.

Autotrophic nutrition

Question number: 143

» Nutrition in Plants and Animals

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MCQ▾

Question

Which of the following options is correct to define the symbiotic relation between the bacterium “Rhizobium” & Leguminous plant?

Choices

Choice (4) Response

a.

Rhizobia fix nitrogen for itself.

b.

Plants provide food and shelter to Rhizobium.

c.

Rhizobium converts atmospheric nitrogen into a soluble form, for plants.

d.

Both b. and c. are correct

Question number: 144

» Transportation in Plants and Animals

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MCQ▾

Question

The following steps enlisted below are arranged in random order. These steps are needed to perform starch test.

  1. Heat the leaf in boiling water for 30 seconds.

  2. Rinse the leaf and add a few drops of iodine over it.

  3. Take a freshly plucked leaf from plant placed in the sun for few hours.

  4. Boil the leaf in ethanol for a few minutes.

Select the option with the correct order of the given steps.

Choices

Choice (4) Response

a.

(1), (2), (3), (4)

b.

(3), (1), (4), (2)

c.

(1), (4), (2), (3)

d.

(1), (3), (4), (2)

Question number: 145

» Nutrition in Plants and Animals

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MCQ▾

Question

Given below is the list of different organs of digestive system along with their functions in random order. Select an option which has the correct order.

  1. Absorption of nutrients from digested food in small intestine.
  2. Breakdown of carbohydrates by salivary amylase in mouth.

  3. Acidic hydrolysis of complex molecules in stomach.

  4. Movement of food in oesophagus in a wave like motion called “peristalsis” to stomach.

Choices

Choice (4) Response

a.

(3), (2), (4), (1)

b.

(2), (4), (3), (1)

c.

(4), (2), (1), (3)

d.

(1), (2), (3), (4)

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