Match the specialized structures/enzymes with the corresponding nitrogen fixer:

List-I (Structure/Enzyme)	List-II (Microorganism)
(A). Heterocyst	(I). Rhizobium
(B). Leghaemoglobin	(II). Anabaena
(C). Respiratory Protection	(III). Clostridium
(D). Anaerobic N-fixation	(IV). Azotobacter

TLS Online TPP Program

#Question id: 40524

#Environmental Science

Match taxonomic evidence with interpretation

Column I	Column II
A. Homologous organs	1. Common ancestry
B. Analogous organs	2. Convergent evolution
C. Vestigial structures	3. Evolutionary remnants
D. Molecular homology	4. Genetic relatedness

TLS Online TPP Program

#Question id: 40525

#Environmental Science

Consider the following statements regarding species delimitation:

1.Reproductive isolation is central to the biological species concept

2.Cryptic species challenge morphology-based taxonomy

3.Allopatric populations are always separate species

4.Molecular evidence can reveal hidden diversity

Which are correct?

TLS Online TPP Program

#Question id: 40526

#Environmental Science

Evaluate statements about systematics data integration:

1.Morphological data may reflect adaptive convergence

2.Molecular data eliminate all classification ambiguity

3.Integrative taxonomy improves reliability

4.Chromosomal variation aids species discrimination

TLS Online TPP Program

#Question id: 40527

#Environmental Science

A city replaces open dumping with a sanitary landfill incorporating liners, leachate collection, and gas vents. The primary environmental benefit of this transition is:

TLS Online TPP Program

#Question id: 40528

#Environmental Science

The most appropriate treatment for infectious biomedical waste is:

TLS Online TPP Program

#Question id: 40529

#Environmental Science

A sanitary landfill is designed to promote controlled anaerobic decomposition. This implies that: