Anatomy of Flowering Plants is a Class 11 Biology chapter that carries about 1.7% of the Biology questions in NEET. Practise it with 57 questions covering 4 topics, each with an explanation.
Sample questions on Anatomy of Flowering Plants with answers
8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.
Question 1: Anatomy of Root, Stem and Leaf
The leaf that has the same structure on both of the surfaces, with the stomata on both, is called:
- A isobilateral, as in the monocot leaf
- B radial
- C dorsiventral
- D bifacial
Answer: A. isobilateral, as in the monocot leaf
Why: The dicot leaf is dorsiventral.
Question 2: Plant Tissues (Meristematic and Permanent)
The cells of the meristematic tissues are:
- A lignified
- B thin-walled, with dense cytoplasm, a prominent nucleus and no vacuoles, and are capable of division
- C vacuolated and non-dividing
- D thick-walled and dead
Answer: B. thin-walled, with dense cytoplasm, a prominent nucleus and no vacuoles, and are capable of division
Why: They are the actively dividing cells.
Question 3: Secondary Growth in Stems
Annual rings visible in the cross-section of a dicot tree trunk arise because:
- A spring wood and autumn wood produced by the cambium differ in density and colour
- B the tree adds a new bark layer each year
- C the pith increases in size annually
- D xylem vessels die every year
Answer: A. spring wood and autumn wood produced by the cambium differ in density and colour
Why: Cambial activity varies with season: spring wood has wider vessels and is lighter, autumn wood is denser and darker, and the contrast between consecutive years appears as a ring.
Question 4: Tissue Systems in Plants
The trichomes on the stem epidermis are usually:
- A unicellular
- B dead
- C absent
- D multicellular, and may be branched or unbranched, soft or stiff; they help in preventing the water loss
Answer: D. multicellular, and may be branched or unbranched, soft or stiff; they help in preventing the water loss
Why: The root hairs are unicellular.
Question 5: Anatomy of Root, Stem and Leaf
The spongy parenchyma in the dicot leaf is:
- A loosely arranged, with the large air spaces, and lies towards the lower epidermis
- B towards the upper epidermis
- C compactly arranged
- D vertical
Answer: A. loosely arranged, with the large air spaces, and lies towards the lower epidermis
Why: It allows the exchange of gases.
Question 6: Plant Tissues (Meristematic and Permanent)
Collenchyma provides:
- A transport of water
- B storage of starch in roots only
- C photosynthesis only
- D mechanical support to growing parts such as young stems and petioles
Answer: D. mechanical support to growing parts such as young stems and petioles
Why: Its cells have thickened corners (pectin and cellulose) and are living, allowing extension as the organ grows.
Question 7: Secondary Growth in Stems
The heartwood is:
- A the cork
- B the secondary phloem
- C the outer functional xylem
- D the dark, hard, central secondary xylem, which is filled with tannins, resins, oils and gums, and is non-functional in conduction
Answer: D. the dark, hard, central secondary xylem, which is filled with tannins, resins, oils and gums, and is non-functional in conduction
Why: The sapwood is the peripheral, lighter-coloured part.
Question 8: Tissue Systems in Plants
The guard cells of a dicot stomata are:
- A dumb-bell shaped
- B bean-shaped
- C circular
- D square
Answer: B. bean-shaped
Why: The guard cells of the grass are dumb-bell shaped.