NSO Level 1- Science Olympiad (SOF) Class 8: Questions 45 - 48 of 1076

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Question number: 45

» Cell

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MCQ▾

Question

Which of the following is/are incorrect?

Choices

Choice (4) Response

a.

Plant cells have cell walls and chloroplast, animal cells do not have these structure.

b.

Plant cells and animal cells contain ribosomes, cytoskeleton and Golgi bodies.

c.

Centrioles are always present in plant cell and animal cell.

d.

All of the above

Question number: 46

» Cell

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MCQ▾

Question

The given image is chromosome. Identify the labelled part P. Q and R?

Image showing chromosome.

Image Showing Chromosome.

Image showing chromosome.

Choices

Choice (4) Response

a.

P – DNA helix, Q – Histone protein, R – Centromere

b.

P – Histone protein, Q – DNA helix, R – Centromere

c.

P – Centromere, Q – DNA helix, R – Histone protein

d.

P – centromere, Q – Histone protein, R – DNA helix

Question number: 47

» Mental Ability

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MCQ▾

Question

The father’s age was 3 times his son’s age 10 year ago and will be 2 times son’s age after 4 years. The ratio of their present age is ________.

Choices

Choice (4) Response

a.

b.

16: 12

c.

d.

Question number: 48

» Cell

Edit
MCQ▾

Question

Which of the following statements is correct about plant cells?

Choices

Choice (4) Response

a.

In plant cell, lysosomes are membrane-bound organelles that comprise of own DNA.

b.

Plant cells have channels in the cell wall through which strands of cytoplasm pass.

c.

Plant cells are linked to neighboring cells by means of fine strands of cytoplasm called plasmodesmata.

d.

Both b. and c. are correct

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