Control and Co-ordination — BIOLOGY STD 12 Science — Question

Cuticular transpiration and Stomatal transpiration.

Natality and Mortality.

Read the following and answer any four questions from (i) to (v) given below:
The Kakapo is the world's largest and heaviest parrot, found only in New Zealand. It is unusual in that it is nocturnal, flightless and ground-dwelling. It is an excellent climber of trees, has strong legs that allow it to "jog" several kilometres in a single trip, and has mossy green plumage mottled with brown and yellow. The Kakapo is also critically endangered as of now, there were only few known living individuals left.

1. Which could be the possible reason for Kakapo to be well-adapted to its environment prior to the arrival of humans in New Zealand?

1. Kakapo was active only in the night when its potential predators would not be out for hunting.
2. The Kakapo would likely be well-camouflaged among the forest foliage due to its greenish plumage.
3. It was able to effectively hunt for food in the night.
4. All of these.

2. When humans started to settle in New Zealand, they took with them non-native animals, including mammals such as cats, dogs and stoats. By which of the following ways, human settlement likely contributed to a near decimation of Kakapo populations in New Zealand?

1. Habitat destruction.
2. Alien species invasion.
3. Pollution.
4. Both (a) and (b).

3. All known survived Kakapo have been relocated by the New Zealand government to three predator-free islands, where they are monitored year round by staffs and volunteers to ensure that the birds are safe, healthy and well-fed. The extremely low population of Kakapo is a hurdle to the species becoming viable in the long term, despite such dedicated conservation efforts. This is because.

1. The small population results in very small gene pool.
2. There would be very Ii mited genetic diversity among the resulting offspring.
3. Of reduced capacity of the species to adapt and survive changes in the environment.
4. All of these.

4. The reasons behind conserving biodiversity have been grouped into which of the following categories?

1. Narrowly utilitarian.
2. Broadly utilitarian.
3. Ethical.
4. All of these.

5. One of the ex situ conservation methods for endangered species is:

1. Wildlife sanctuaries.
2. Biosphere reserves.
3. Cryopreservation.
4. National parks.

Distinguish between : Pulmonary circulation and Systemic circulation.

Distinguish Between: Dominant characters and Recessive characters.

Distinguish between: Menarche and Menopause.

Distinguish between: Morula and Blastula.