List of practice Questions

Which of the following is NOT an indicator of soil fertility and productivity

The presence of diverse and active microbial population is an indicator of

Which of the following is NOT used to measure relative humidity

Deficiency of which nutrient causes yellowing of leaves and stunted growth?

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: The response of plants to elevated concentrations of \(CO_2\) is known as carbon-dioxide fertilization effect.
Reason R: Under elevated concentrations of atmospheric \(CO_2\), plants are able to increase their rate of photosynthesis.
In the light of above statements, choose the correct answer from the options given below

Increased UV-B radiations does not influence plants and aquatic ecosystems by-

Arrange these in a appropriate sequence:
Following are the events of disease cycle of Fusarium. Arrange them in appropriate sequence.
A. Collapsed and distorted vessels in infected stem.
B. penetration through cracks formed by emerging lateral roots.
C. Ring of discolored vessels in secondary xylem.
D. Germination of different types of conidia.
E. Lower branches begin to wilt.

Earth Observing System-EOS, Terra mission was launched by NASA in December, 1999 to

Sequentially arrange the steps involved in primary autotrophic succession
A. Development of a base area without any life form (NUDATION)
B. Establishment of CLIMAX COMMUNITY
C. Successful establishment of a pioneer species in a base area (INVASION)
D. Individual compete with one another and affect each others life in various ways (COACTION) 
E. Modification of the environment through the influence of living organisms on it (REACTION)
Choose the correct answer from the options given below:

Banana bunchy top is caused by-
A. Bacteria B. Fungus
C. Virus
D. Nematodes
E. Protozoans
Choose the most appropriate answer from the options given below:

The 'third generation pesticides' are given for

Buttressess are commonly found in

Which of the following relation between Arithmatic mean (AM), Geometric mean (GM) and Harmonic mean (HM) is correct?

Arrange the infection process in an appropriate sequence Agrobacterium tumefaciens causing tumor disease in plants-
A. Multiplication of genome to cause infection and disease 
B. Chemotactic attraction of bacteria towards host roots
C. Integration in the target host system in nuclei
D. Activation of virulence system for the transfer of T-DNA 
E. Formation of single-stranded DNA
Choose the correct answer from the options below:

Climate responses are defined as-
A. Climate change as long term alteration of temperature and typical weather patterns. 
B. Climate mitigation are the actions taken to reduce or prevent \(GHG\) emissions. 
C. \(CO_2\) is the greenhouse gas produced by landfills, and livestocks.
D. Fossil fuels are renewable energy sources that minimally contribute in GHG emission
Choose the most appropriate answer from the options given below
 

The process of successful establishment of a species, as a result of adjustments with the conditions prevailing there is called

Why is canola oil preferred over oilseed rape?

Given below are two statements:
Statement I: Carbon mineralization test in soil is used to test the effects of chemical on indigenous microbes
Statement II: Oxygen consumption inhibition in activated sludge is a respiration based test for testing the effects of chemicals. In the light of the above statements, choose the most correct answer from the options given below

Plants exhibit adaptive traits to cope up with fire this includes
A. Enhanced seed setting and reproduction
B. Long seed viability
C. Serotiny
D. Reduced seed germination
E. Sprouting of perennial buds
choose the correct answer from the options given below:

	List I		LIST I
A	Boreal	I	Rosette shrubs, grasses, sedges.
B	Polar	II	Largely evergreen coniferous trees, lichens form ground cover, low shrubs and grasses
C	Nemoral	III	Broad leaved deciduous or evergreen trees, monsoon forests
D	Tropical	IV	Mesophytic and deciduous forest, many perennial herbs

Choose the correct answer from the options given below:

Which of the following is an environmental benefit of agroforestry?

The risk of new synthetic compounds can be assessed with the help of information on-
A. Structure of synthetic compound
B. Polarity of compound
C. Tendency of disperse in the environment
D. Persistence E. Conversion to different forms
Choose the correct answer from the options given below

Which nutrient deficiency causes necrosis or death of leaf tips and margins.

Arrange the various steps of a generalized frame work for ecosystem restoration in a sequence
A. Plan of action
B. Synthesis of Information
C. Review
D. Restoration objectives
E. Tools, methods and monitoring
Choose the correct answer from the options given below: