CBSE Science Class 9 Plants Tissue multiple choice questions with answer & explanation
1. In plants, lateral meristem is responsible for growth in :
(A) Length
(B) Thickness
(C) Parenchyma
(D) Cortex
Solution
Sol. Lateral meristem brings growth in thickness of the plant.
2. The stem of grasses and related plants elongate by the activity of :
(A) Apical meristem
(B) Lateral meristem
(C) Intercalary meristem
(D) Both apical and intercalary meristem
Solution
Sol. In grasses and related plants both Apical and intercalary meristem are required for elongation of stem.
3. Intercalary meristem is present in :
(A) At the base of node in mint
(B) At the base of internode in grasses
(C) At the base of leaf in pinus
(D) All of the above
Solution
Sol. Intercalary meristem is present at base of leaf and base of node and internode.
4. Tissue involved in increasing the girth of the plant is :
(A) Apical meristem
(B) Lateral meristem
(C) Intercalary meristem
(D) Cork
Solution
Sol. Lateral meristem brings increase in girth or thickness of plant.
5. Aerenchyma assists the plants in :
(A) Attachment
(B) Mechanical strength
(C) Floating on water
(D) Exchange of gases
Solution
Sol. Aerenchyma is modified parenchyma that gives buoyancy to the plants.
6. A permanent tissue that has power of divisions is :
(A) Parenchyma
(B) Collenchyma
(C) Aerenchyma
(D) Sieve tube
Solution
Sol. A permanent tissue that has power of divisions is Parenchyma.
7. Lignified elongated dead cells are :
(A) Parenchyma
(B) Collenchyma
(C) Sclerenchyma
(D) None of the above
Solution
Sol. Sclerenchyma has elongated and lignified dead cells.
8. What is true for collenchyma ?
(A) It has cytoplasm and nucleus
(B) It is absent in roots and monocot stems
(C) Uneven pecto-cellulose thickening at corner
(D) All of the above
Solution
Sol. It is that simple permanent tissue whose cells are living. It is absent in dicot roots, monocot plants and underground parts.
9. One thing common between sclerenchyma and collenchyma is:
(A) To provide support
(B) Help in material transport
(C) Help in buoyancy
(D) Conduction of water and minerals
Solution
Sol. Selerenchyma and collenchyma both provide mechanical support. Collenchyma provides elastic strength and sderenchyma provide mechanical support.
10. Which simple permanent tissue is dead at maturity :
(A) Parenchyma
(B) Collenchyma
(C) Sclerenchyma
(D) All of the above
Solution
Sol. Sclerenchyma cells are dead at maturity and have thick lignified walls.
11. In old and mature dicot roots and stems, the structure responsible for transpiration is :
(A) Stomata
(B) Lenticels
(C) Both A & B
(D) Tracheid
Solution
Sol. Transpiration in old and mature dicot root and stem occurs through pores called lenticels.
12. Lignin is present in :
(A) Parenchyma
(B) Xylem
(C) Phloem
(D) Bundle Sheath
Solution
Sol. Vessels and Tracheids of xylem are lignified and dead components.
13. The phloem in the plants does the function of :
(A) Providing support
(B) Mineral movement
(C) Conduction of food
(D) Conduction of water
Solution
Sol. The phloem in the plants perform the function of conduction of food.
14. Vessels are the major water conducting cells in :
(A) Angiosperms
(B) Monocots only
(C) Dicots only
(D) Pteridophytes and gymnosperms
Solution
Sol. Xylem vessels are only present in Angiosperms. Vessels are absent in Pteridophytes, Gymnosperms etc.
15. Sieve tubes and companion cells occur in :
(A) Xylem
(B) Meristem
(C) Cork
(D) Phloem
Solution
Sol. Sieve tubes and companion cells occur in phloem tissue.
16. Which of the following is a complex tissue :
(A) Cortex
(B) Sclerenchyma
(C) Xylem
(D) Parenchyma
Solution
Sol. Xylem is a complex tissue. While parenchyma and sclerenchyma are simple permanent tissues. Cortex is made up of parenchyma.
17. Nucleated part of phloem is :
(A) Phloem fibre
(B) Companion cell
(C) Sieve element
(D) All the above
Solution
Sol. Companion cells are nucleated, phloem fibres are dead and sieve element lose nucleus at maturity.
18. The stem of submerged water plants is soft and weak because :
(A) They are devoid of xylem
(B) They totally lack phloem
(C) They don’t have stomata
(D) The supportive tissue and xylem are feebly developed.
Solution
Sol. Hydrophytes have less developed xylem and mechanical tissue because they do not require water conduction and support.
19. Commercial fibres are obtained from :
(A) Xylem, phloem and sclerenchyma
(B) Phloem, Sclerenchyma and epidermis
(C) Xylem, parenchyma, epidermis
(D) xylem, parenchyma, endodermis
Solution
Sol. Cotton fibre is epidermal outgrowth, coir is sclerenchymatus while jute and hemp are bast fibres (phloem fibres).
20. Chloroplast containing cell is :
(A) Collenchyma, parenchyma
(B) Collenchyma and sclerenchyma
(C) Parenchyma and sclerenchyma
(D) Chlorenchyma and parenchyma
Solution
Sol. Chlorenchyman and parenchyma has chloroplast.
21. The most common type of ground tissue is :
(A) Collenchyma
(B) Parenchyma
(C) Epidermis
(D) Sclerenchyma
Solution
Sol. Ground tissue is made up of parenchyma.
22. Cellular totipotency is demonstrated by :
(A) Only gymnosperm cells
(B) All plant cells
(C) All eukaryotic cell
(D) Only bacterial cells
Solution
Sol. Cellular totipotency is demonstrated by all plant cells.
23. The hydathodes are
(A) Oil secreting glands
(B) Water secreting glands
(C) Mucilage secreting glands
(D) Honey glands
Solution
Sol. These excrete water in the form of drops. They are present at the end of veins, are always open and of large size.
24. Flesh of guava, apple, pear and sapota fruits is gritty. It is due to :
(A) Sclerenchyma fibres
(B) Sclerenchyma sclereids
(C) Collenchyma and lignin
(D) (A) and (B) both
Solution
Sol. Sclereids are highly thickened with lignin and provide grittiness to fleshy fruits like guava, pear, sapota stiffness and hardness to seed coat, nuts and endocarp of coconut/almond.
25. Parenchyma has :
(A) Intercellular spaces and uniform thickening
(B) Deposition on corners
(C) Deposition on angles
(D) Deposition in form of bands
Solution
Sol. Perenchyma has intercellular spaces and uniform thickening.