Question

Refer to the given dichotomous key and select the correct statement.
(i) (a) Single parent is involved - Go to (ii)
(b) Two parents are involved - Go to (v)
(ii) (a) New plants are produced by natural method - Go to (iii)
(b) New plants are produced by artificial method - Go to (iv)
(iii) (a) Plant produced through stem - P
(b) Plant produced through root - Q
(iv) (a) Plant produced from unorganised cell mass - R
(b) Plant produced by bending young branch towards the ground and covered with moist soil - S
(v) (a) Plant produced when pollen grains are transferred to the stigma of same flower of the same plant - T
(b) Plant produced on transferring pollen grains to the stigma of different flower - U

• A. P could be sweet potato while S could be Asparagus.
• B. R could be Asparagus which grows in suitable nutrient medium.
• C. T could be papaya while U could be Hibiscus.
• D. Q could be potato which possesses scars or depressions called eyes.

Answer 1

The correct option is C T could be papaya while U could be Hibiscus.

Sweet potato is produced from the root (it is not P)

Potato is produced from the stem (it is not Q)

Asperagus propagates vegetatively through tuberous roots. (It is not S or R either)

Papaya can self pollinate as pollen are transferred to the stigma of same flower (it is T)

Hibiscus can cross pollinate as pollen are transferred to the stigma of different flower (it is U).

So the correct answer is ' T could be Papaya while U could be Hibiscus'.