Download App

STD 12 - 8. microbes in human welfare — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 8. microbes in human welfare4 Marks
MCQ
Pesticides disturb the ecosystem by eliminating the
  • A
    Micro-organism of crop
  • ✓
    Organisms which form the food chain
  • C
    Organisms which protect the environment
  • D
    None of the above
✓

Answer

Correct option: B.
Organisms which form the food chain
b
(b)Pesticides also enter the food chain, their concentration goes as they move up in the food chain. This is called bio magnification or bioconcentration.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Axon part of the neuron is highly modified for which of the following function
→
Haemodialysis helps in the patient having
→
The narrowest and most numerous tubes of lungs are termed as
→
In terms of $ABO$ system of blood grouping a transfussion reaction is  not to follow administration of
→
In human beings, normally in which one of the following parts, does the sperm fertilize the ovum?
→
If in a garden pea plant, a cross is made between red flowered and white flowered plants. What will be the phenotypic ratio in $F_2$ generation
→
Given statements are characters of muscle, which of the following is incorrect for skeletal muscles ?
(i) They do not exhibit any striation and are smooth in appearance. Hence, they are called non- striated muscle.
(ii) They have a striped appearance under the microscope and hence are called striated muscles.
(iii) As their activities are under the voluntary control of the nervous system, they are known as voluntary muscles too.
(iv) Their activities are not under the voluntary control of the nervous system and are therefore known as involuntary muscles.
(v) They are located in the inner walls of hollow visceral organs of the body like the alimentary canal, reproductive tract, etc.
(vi) They are primarily involved in locomotory actions and changes of body postures.
(vii) Are closely associated with the skeletal components of the body.
→
What is the correct sequence of the following events

$1.$Formation of the chromosome theory of heredity

$2.$Experiments which proved that $DNA$ is the hereditary material

$3.$Mendel's laws of inheritance-discovery

Code :

→
The effect of different hormones on the body can be best said to bring about
→
Mycorrhiza is a symbiotic association between
→