Practice Questions

TLS Online TPP Program

#Question id: 12567

Which of the following is true about the current research about forest fragmentation?

#Unit 10. Ecological Principles

Fragmented forests support a greater biodiversity because they result in the combination of forest- edge species and forest interior species.
Fragmented forests support a lesser biodiversity because the forested- adapted species leave, and only the edge and open- field species can occupy fragmented forests.
Fragmented forests are the goal of conservation biologists who design wildlife preserves
Harvesting timber that results in forest fragmentation results in less soil erosion.

More Questions

TLS Online TPP Program

#Question id: 29112

#Unit 8. Inheritance Biology

An example of multiple alleles is at a locus that determines the feather pattern of mallard ducks. One allele, M, produces the wild-type mallard pattern, MR, produces restricted, and a third allele, md, produces dusky. In this allelic series, dominancy shows MR >M > md

If a cross between MR md X M md, What proportion of progeny will be restricted?

TLS Online TPP Program

#Question id: 29114

#Unit 8. Inheritance Biology

Given below, is the result of a complementation test for six independent mutants (1 to 6)

TLS Online TPP Program

#Question id: 29115

#Unit 8. Inheritance Biology

Given below, is the result of a complementation test for seven independent mutants (A to G). '+' represents complementation; '_' represents non complementation. Based on the above, which one of the following conclusions is correct

a) The mutations can be ordered in a three cistron as A-G-B-C-D-E-F

b) All mutations belong to a single cistron, but their order cannot be determined.

c) There are three cistrons, mutations A and G represent one cistron, B, C and D represent the second cistron and E and F represents the third cistron.

d) There are three linkage groups, mutations A and G represent linkage group-I, B, C and D represent linkage group-II, and E and F represents linkage group-III

TLS Online TPP Program

#Question id: 29116

#Unit 6. System Physiology – Plant

Which one of the following is the correct order of during light reaction in the thylakoid membrane of chloroplast

TLS Online TPP Program

#Question id: 29117

#Unit 6. System Physiology – Plant

Light reactions of photosynthesis are carried out by four major protein complexes: Photosystem I (PSI), photosystem II (PSII), the cytochrome b6f complex and ATP synthase. The following are certain statements on PSII:

a. Red light absorbed by photosystem II (PSII) produces a strong oxidant and a weak reductant.

b. Far-red light absorbed by photosystem II (PSI) produces a weak oxidant and a strong reductant.

c. The strong oxidant generated by PSII oxidizes water,

d. The strong reductant generated by PSII oxidizes water