Default Title

Question (21)

QN002861

Long branched nerve cells are suitable for:

(A) storing food
(B) transporting water
(C) rapid transmission of messages
(D) protecting inner lining

Correct Answer: C

Explanation:

Their long branched structure helps pass messages quickly.

Link:

Report Error

Question (22)

QN002862

Which level of organisation is correctly arranged from simplest to most complex?

(A) Tissue → Cell → Organ → Organism
(B) Cell → Tissue → Organ → Organ system → Organism
(C) Organ → Tissue → Cell → Organism
(D) Cell → Organ → Tissue → Organism

Correct Answer: B

Explanation:

Cells form tissues, tissues form organs, and so on.

Link:

Report Error

Question (23)

QN002863

A group of similar cells working together forms a:

(A) tissue
(B) organ
(C) organ system
(D) organism

Correct Answer: A

Explanation:

Similar cells together form a tissue.

Link:

Report Error

Question (24)

QN002864

The egg of an ostrich is considered the largest known cell because its diameter may reach approximately:

(A) 10–20 mm
(B) 30–50 mm
(C) 130–170 mm
(D) 300–400 mm

Correct Answer: C

Explanation:

Ostrich egg yolk measures about 130–170 mm in diameter.

Link:

Report Error

Question (25)

QN002865

If a microscope magnifies an object 400 times, a microorganism of actual size 0.2 mm would appear nearly:

(A) 0.8 mm
(B) 8 mm
(C) 40 mm
(D) 80 mm

Correct Answer: D

Explanation:

0.2 × 400 = 80 mm.

Link:

Report Error

Question (26)

QN002866

A scientist observes a unicellular organism moving with specialised structures in pond water. The organism is most likely:

(A) bread mould
(B) Paramecium
(C) mushroom
(D) Rhizobium

Correct Answer: B

Explanation:

Paramecium moves using specialised structures.

Link:

Report Error

Question (27)

QN002867

Bread mould belongs to the group:

(A) algae
(B) bacteria
(C) fungi
(D) protozoa

Correct Answer: C

Explanation:

Bread mould is a fungus.

Link:

Report Error

Question (28)

QN002868

Which microorganism helps in curd formation?

(A) Amoeba
(B) Lactobacillus
(C) Yeast
(D) Rhizobium

Correct Answer: B

Explanation:

Lactobacillus converts milk into curd.

Link:

Report Error

Question (29)

QN002869

Dough rises after adding yeast mainly due to the release of:

(A) oxygen
(B) nitrogen
(C) carbon dioxide
(D) hydrogen

Correct Answer: C

Explanation:

Yeast releases carbon dioxide during respiration.

Link:

Report Error

Question (30)

QN002870

In an experiment, bowl A contains flour, sugar, warm water, and yeast. Bowl B contains all except yeast. After 5 hours, bowl A becomes fluffy. The best explanation is that yeast:

(A) absorbs all moisture
(B) produces carbon dioxide during respiration
(C) converts flour into starch
(D) cools the dough rapidly

Correct Answer: B

Explanation:

Carbon dioxide bubbles make the dough fluffy.

Link:

Report Error

Question (21)

Long branched nerve cells are suitable for:

Explanation:

Link:

Question (22)

Which level of organisation is correctly arranged from simplest to most complex?

Explanation:

Link:

Question (23)

A group of similar cells working together forms a:

Explanation:

Link:

Question (24)

The egg of an ostrich is considered the largest known cell because its diameter may reach approximately:

Explanation:

Link:

Question (25)

If a microscope magnifies an object 400 times, a microorganism of actual size 0.2 mm would appear nearly:

Explanation:

Link:

Question (26)

A scientist observes a unicellular organism moving with specialised structures in pond water. The organism is most likely:

Explanation:

Link:

Question (27)

Bread mould belongs to the group:

Explanation:

Link:

Question (28)

Which microorganism helps in curd formation?

Explanation:

Link:

Question (29)

Dough rises after adding yeast mainly due to the release of:

Explanation:

Link:

Question (30)

In an experiment, bowl A contains flour, sugar, warm water, and yeast. Bowl B contains all except yeast. After 5 hours, bowl A becomes fluffy. The best explanation is that yeast:

Explanation:

Link:

Excel With Tutors

ExcelWithTutors

For Student

For Tutors

Learn

OUR POLICY