Ques. 1AIPMT 2010 (Mains)
Which one of the following is monoecious?
- Marchantia
- Cycas
- Pinus
- Date palm
Answer
(3) Pinus
Solution
A monoecious (bisexual) plant bears both male and female reproductive structures on the same plant.
⇒ Pinus bears male cones and female cones on the same tree, so it is monoecious.
∵ Marchantia has separate male and female thalli, Cycas has separate male and female plants, and as per NCERT, date palm is a dioecious plant,
∴ the monoecious plant is Pinus.
Answer: (3)