List of top Environmental Sciences Questions

Which of the following microbial species are helpful in the denitrification process?
Microbial species:
A. Rhizobium sp
B. Achromobacter
C. Pseudomonas
D. Nitrosomonas
E. Azotobacter
Choose the correct answer from the options given below:

Choose the correct statements:
Statements:
A. In sickle cell anemia, a valine is substituted for the glutamic acid at a location on the surface of the protein near the oxygen-binding site.
B. The red blood cells of people who are homozygous for the sickle cell allele collapse into sickled shape when the oxygen level in the blood is low.
C. Individuals who are heterozygous for the recessive valine-specifying allele are said to possess the sickle cell trait.
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Which of the following were the characteristics of the prebiotic primitive Earth?
Characteristics:

A. Presence of \( \text{CO}_2 \)
B. Presence of \( \text{CH}_4 \)
C. Presence of \( \text{H}_2\text{O} \) vapour
D. Presence of \( \text{O}_2 \)

Choose the correct answer from the options given below:

Which of the following metal is bioaccumulative in nature but does not undergo biomagnification to cause adverse health effects?

Which of the following is an example of a condition caused by chromosomal abnormality?

The correct sequence of classification of house mouse is:

The ”Biofilm” is a thin layer that constitutes:

The coal mining carried out by landowners/local miners in Meghalaya state of India in the form of a long narrow opening is known as:

While separating the protein using polyacrylamide gel electrophoresis, the major ions playing an important role in stacking the protein are:
i. Glycine of the running gel buffer
ii. Chloride ion
iii. The protein itself
Which of the following is correct?

The monumental book ’Silviculture of Indian Trees’ is written by:

Which of the following structure cannot be taken by the single subunit protein?

Starch, the major product of photosynthesis in leaves, gets accumulated in:

Which among the following is/are false?
Statements:
A. Most conifers are monoecious, evergreen, and produce resin.
B. Cycads are dioecious.
C. There is one living species in the phylum Ginkophyta.
D. Gnetum shows the presence of two distinct archegonia in a female gametophyte.
E. Compositae family is known as Asteraceae.
Choose the correct answer from the options given below:

Bryophytes are divided into three distinct phyla. The liverworts belong to the phylum:

Hypothalamus is present in which part of the brain?

Choose the correct statements:
Statements:
A. Many echinoderms are able to regenerate lost parts.
B. In many echinoderms, respiration and waste removal takes place by means of skin gills.
C. Sea urchins lack distinct arms but have the same five-part body plan as all other echino derms.
Choose the correct answer from the options given below:

Match List I with List II:

LIST I (Species)	LIST II (Number of chromosomes)
A. Triticum vulgare	I. 18
B. Brassica oleraceae	II. 42
C. Arabidopsis thaliana	III. 4
D. Machaeranthera gracilis	IV. 10

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The publication ’The Future We Want’ is the outcome of:

Photochemical smog formation in ambient atmosphere requires:
A. Volatile hydrocarbon
B. Ozone
C. SO2
D. Sunlight Temperature
E. NOx
Choose the correct answer from the options given below:

Bone present in the thigh region of humans is known as:

Stratospheric ozone protects us from:

Which of the following greenhouse gases is not emitted from landfill sites?

Arrange the following greenhouse gases in increasing order of their relative contribution to global warming:
Greenhouse gases:
A. CO₂
B. N₂O
C. CFCs
D. CH₄
Choose the correct answer from the options given below:

What will be the energy of 1 mole of photons having a wavelength of 200 nm?
Planck’s constant, \( h = 6.6 \times 10^{-34} \, \mathrm{Js} \) and Speed of light, \( c = 3.0 \times 10^8 \, \mathrm{ms^{-1}} \)

It took 168 years for a population to increase from 0.4 million to 3.2 million. If we assume exponential growth at a constant rate over that period of time, the growth rate would be approximately: