Daily Olympiad: Science - Tissues [20260511] – 9 Practice Problems & Printable PDF

1. Which plant tissue provides flexibility and strength in stems without making them rigid?

A. Parenchyma B. Collenchyma C. Sclerenchyma D. Xylem

Solution

Correct: B

Collenchyma cells have irregularly thickened cell walls that provide flexibility for growth. Parenchyma is soft, sclerenchyma is dead and rigid, and xylem transports water.

2. Which of the following tissues is dead at maturity and has lignified walls?

A. Parenchyma B. Collenchyma C. Sclerenchyma D. Phloem

Solution

Correct: C

Sclerenchyma cells are dead with thick, lignified walls that provide rigid structural support. Other options like parenchyma/collenchyma are living and less rigid.

3. Which tissue lines the inner surface of kidney tubules and aids in absorption?

A. Stratified squamous epithelium B. Cuboidal epithelium C. Columnar epithelium D. Simple squamous epithelium

Solution

Correct: B

Cuboidal epithelium has cube-shaped cells optimized for secretion and absorption in glandular tissue and kidney tubules.

4. The epidermis in plants is primarily composed of which tissue type?

A. Parenchyma B. Collenchyma C. Sclerenchyma D. Meristematic

Solution

Correct: A

The epidermis is a single layer of parenchyma cells that protects against desiccation and pathogen entry. Meristematic cells are found in growth points.

5. Which of these tissues transports water and minerals from roots to leaves?

A. Xylem B. Phloem C. Parenchyma D. Sclerenchyma

Solution

Correct: A

Xylem vessels have lignified walls and dead cells for efficient water transport. Phloem transports food, not water.

6. Which plant tissue is responsible for secondary growth in dicot stems?

A. Apical meristem B. Vascular cambium C. Collenchyma D. Parenchyma

Solution

Correct: B

Vascular cambium is a meristematic tissue that produces secondary xylem and phloem, causing thickening in stems.

7. Which of these contains intercalated discs that enable synchronized contractions?

A. Skeletal muscle B. Cardiac muscle C. Smooth muscle D. Neurons

Solution

Correct: B

Cardiac muscle has intercalated discs for electrical coupling, allowing coordinated contractions in the heart. Skeletal muscle lacks this feature.

8. Adipose tissue is a type of ______ tissue.

A. Epithelial B. Connective C. Muscular D. Nervous

Solution

Correct: B

Adipose is a specialized connective tissue storing fat and insulating the body.

9. Which tissue in plants has a waterproof layer called casparian strips?

A. Xylem B. Endodermis C. Phloem D. Epidermis

Solution

Correct: B

Endodermal cells in roots have the casparian strip, controlling the flow of water and nutrients into vascular bundles.

Daily Olympiad: Science - Tissues [20260511]

1. Which plant tissue provides flexibility and strength in stems without making them rigid?

2. Which of the following tissues is dead at maturity and has lignified walls?

3. Which tissue lines the inner surface of kidney tubules and aids in absorption?

4. The epidermis in plants is primarily composed of which tissue type?

5. Which of these tissues transports water and minerals from roots to leaves?

6. Which plant tissue is responsible for secondary growth in dicot stems?

7. Which of these contains intercalated discs that enable synchronized contractions?

8. Adipose tissue is a type of ______ tissue.

9. Which tissue in plants has a waterproof layer called casparian strips?

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