Category: Forestry mcqs

No.	Topics.	No.	Topics.
1.	Forestry Past Paper mcqs

All of the following statements regarding lung ventilation and gas exchange are true EXCEPT one. Select the exception.

Gas exchange occurs in blind-ending sacs called alveoli
Abdominal and thoracic air sacs are compressed by body muscles to move air through the respiratory system
Two respiratory cycles are required to move a volume of air through the respiratory system
Birds have a greater rate of oxygen consumption than any other vertebrate.

150 million year old fossils of this ancient bird have been found in Germany. They show a clavicle for the attachment of wing muscles, but other sites for flight muscle attachment were less developed. These observations indicate that this bird was capable of gliding, but not long distance, flight.

Archaeopteryx
Sinoris
Eoalulavis
Sterna

Feathers develop from the – of the skin.

epidermis
dermis
hypodermis
basement membrane

Which of the following kinds of mammal teeth are usually modified for gnawing or nipping?

incisors
canines
premolars
molars

Hot springs and volcanic activity pours out about – million tons of carbon-di-oxide back into the atmosphere in a year.

100
200
300
4 to 9×103

The biogeochemical cycles involve biological and non-biological agents and both are more or less tied to another cycle the –

Water Cycle
Chemical cycle
Biospheric Cycle
Mineral Cycle

Photosynthesis fixes about – of carbon annually.

4 to 9×1013 Kg
4 to 9×1017 Kg
4 to 9×1023 Kg
4 to 9×1027 Kg

There – main types of biogeochemical cycles

2
3
4
5

Some birds are helpless at hatching, others are more independent. Those that are entirely dependent on their parents are said to be –

Altricial
Precocial
Parasitic
Scrounging

The earth’s atmosphere extends to about 1000 kilometers but only – of it is inhabited by living organisms.

6 Km
7 Km
8 Km
13 Km

The fusion of posterior caudal vertebrae into a – supports tail feathers that are important in steering during flight.

pygostyle
ucinate process
synsacrum
furcula

The major constraint of habitat fragmentation on species is –

Inbreeding
Edge effect
Deforestation
Habitat loss

The values of biodiversity that can be measured in terms of economics are the –

Instrumental values
Intrinsic values
Aesthetic values
Religious values

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