Download chapter 10

Dr. AASHISH H. PANCHAL
(M.Pharm., Ph.D.)
TRISHA INSTITUTE OF BIOLOGY
GSEB/CBSE/ISC/NEET
COMPLETE BIOLOGY SOLUTION
STD-12 (Semester-3)
Sub: Biology (056) (E)
Time: 1 hour
PART-A
CHAPTER 10
Marks:40
1. A population with equal number of births and deaths will show
(a)Acceleration phase of growth
(b) Steady (Platue) phase
(c)Exponential growth phase
(d)Initial phase of growth
2. An association of individuals of different species living in the same habitat and having
functional interactions is
(a)Biotic community
(b) Ecologic niche
(c)Population
(d)Ecosystem
3. Association between sea Anemone and Hermit crab in gastropod shell is that of
(a)Parasitism
(b) Commensalism
(c)Symbiosis
(d)Amensalism
4. CAM helps the plants in
(a)Reproduction
(b) Conserving water
(c)Secondary growt (d)Disease resistance
5. The abundance of a species population within its habitat is called
(a)Relative density
(b) Regional density
(c)Absolute density (d)Niche density
6. Competition is most severe between two
(a)Distantly related species growing in the same habitat
(b) Closely related species growing in the same habitat
(c)Closely related species growing in different niches
(d)Distantly related species growing in different niches.
7. Which is the example of intraspecific competition for food?
(a) Barnacle on rocks of the submerged water
(b) Two female dogs and two male dogs
(c) Various types of lichens
(d) Paramaecium caudatuns and P.aurelia in laboratory
8. Which animal is capable of obtaining water by oxidation of lipid.
(a) Rat
(b) Earthworm
(c) Mole
(d) Kangaroo rat
9. A population has more young individuals compared to the older individuals. What would be
the status of the population after some years?
(a)It will decline
(b) It will stabilize (c)It will increase
(d)It will first decline and then stabilise
10. Which of the following would necessarily decrease the density of a population in a given
habitat?
(a)Natality > mortality
(b) Immigration > emigration
(c)Mortality and emigration
(d)Natality and immigration
11. Amensalism is an association between two species where:
(a)One species is harmed and other is benefitted(b) One species is harmed and other is unaffected
(c)One species is benefitted and other is unaffected
(d)Both the species are harmed.
12. Lichens are the associations of:
(a)Bacteria and fungus
(b) Algae and bacterium
(c)Fungus and algae
(d)Fungus and virus
13. In a population, if the rate of addition of new members is higher than the rate of individuals
lost, it shows
(a)Exponential growth
(b) Declined growth
(c)Zero population growth
(d)none of these
14. In an ecosystem Biotic factors affect the survival of an organism in that ecosystem. They
include
(a)competition for food and water
(b) competition for shelter
(c)co-operation to help find food
(d)All of these
15. In ecological succession from pioneer to climax community, the biomass shell
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Dr. AASHISH H. PANCHAL
(M.Pharm., Ph.D.)
TRISHA INSTITUTE OF BIOLOGY
GSEB/CBSE/ISC/NEET
COMPLETE BIOLOGY SOLUTION
(a)No relation
(b) Increase and then decrease
(c)Decrease
(d)Increase continuously
16. Individuals of a species which occur in a particular area constitute
(a)Population
(b) Community
(c)Biosphere
(d)Biome
17. Organisms that can tolerate and thrive in a wide range of temperatures are called
(a)Eukaryotic organisms
(b)Stenothermal
(c)Eurythermal
(d)None of these
18. A barnacle grows on a whale, doing it no harm. This is an example of
(a)Vitalism
(b) Mutualism
(c)Parasitism
(d)Commensalism
19. Of the following types of interactions, which one is least likely to limit population size?
(a)predation
(b) commensalism (c) competition
(d)brood parasitism
20. What is correct for given diagram?
(a) Expanding population
(b) Stable population
(c) Declining population
(d) Constantly declining population
21. What is Indicated as 'B' and 'C' respectively in given graph ?
(a) Positive acceleration phase, Negative acceleration phase
(b) Negative acceleration phase, Positive acceleration phase
(c) Logarithmic phase, Negative acceleration phase
(d) Logarithmic phase, Positive acceleration phase
22. dN/dt represents...
(a) Birth rate
(b) Death rate
(c) Change in population size
(d) Carrying capacity
23. Mammals regulate their body temperature by:
(a) Producing sweat
(b) Storing water in intestine
(c) Storing water in the water cells present in the rumen
(d) (a), (b) and (c) all
24. Which of the following is correct sequences for plant xerosere ?
(a) Algae --- Lichens --- Herb --- Moss --- Shrub (b) Lichens --- Algae --- Moss --- Shrub --- Herb
(c) Lichens --- Mosses --- Herbs --- Shrubs
(d) Algae --- Fungi --- Lichens --- Mosses
25. Secondary succession starts...
(a) From the primitive substratum
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Dr. AASHISH H. PANCHAL
(M.Pharm., Ph.D.)
TRISHA INSTITUTE OF BIOLOGY
GSEB/CBSE/ISC/NEET
COMPLETE BIOLOGY SOLUTION
(b) From previously built up substrates with already existing living matter.
(c) Where there was no previously any sort of living matter
(d) Where there was no previously any sort of non living mater.
26. Various diseases...
(a) increases the population density
(b) Reproductive ability maintain
(c) Reduces the population density
(d) Increases carrying capacity
27. Assertion : Ascaris is an ectoparasite.
Reason : Ascaris gets attached to skin of catties.
(a) If both 'A' and 'R' arc true and 'R' is the correct explanation of 'A'.
(b) If both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'.
c) 'A' is true but 'R' is false
(d) Both 'A' and 'R' are false.
28. Assertion : Predation is the killing of one animal by other for food.
Reason : Biological control methods adopted in agricultural pest control are based on the
ability of the predator.
(a) If both 'A' and 'R' arc true and 'R' is the correct explanation of 'A'.
(b) If both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'.
c) 'A' is true but 'R' is false.
(d) Both 'A' and 'R' are false.
29. The Succession which starts from the primitive Substratum is known as ...........
(a) Primary succession
(b) Secondary succession (c) Both (a) and (b) (d) Primitive succession
30. What are the various developmental stages of a community known as ?
(a) Pioneer Stages (b) Climax stages
(c) Seral Stages
(d) Mesosere stages
31. Select correct statement.
(a) According to Treshow niche is the profession of an organism in the community
(b) The various developed stages of community are called as seral stages.
(c) Plankton and moss plant enrich the pond.
(d) There is an decrease in structural complexity during succession.
32. 'Communities are never stable, but changing regularly over time and space.'
(a) 'Changing sooner or later' - is not clearly mention.
(b) 'Changing more or less' - is not clearly mention.
(c) 'Biotic communities' - is not clearly mention
(d) 'Climax community' - is not clearly mention
33. Following statements are proper for adaptation, expect...
(a) Kangaroo rat in desert is capable of meeting all its water requirements through its internal lipid
oxidation.
(b) Competition occurs between Paramoecium caudatom and Paramoecium aurelia for food.
(c) Many fish in Antarctic waters where the temperature is always below Zero.
(d) Archae bacteria that flaurish in hot spring where temperature for exceed 100°C.
34. A body of water in which river water mixes with the sea water is called:
(a) Swamp land
(b) Marshy land
(c) Estuary
(d) Reverine area
35. Functional status of an organisms in its community is called:
(a) Ecological Niche
(b) Environmental periodicity
(c) Tolerance range
(d) Endemism
36. The animals which eat the producers:
(a) Primary producers
(b) Primary consumers
(c) Secondary consumers
(d) Decomposers
37. Any external force, substance or condition, which surrounds and affects the life of an organism
in any way is called:
(a) Environment
(b) Environmental factor
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Dr. AASHISH H. PANCHAL
(M.Pharm., Ph.D.)
TRISHA INSTITUTE OF BIOLOGY
GSEB/CBSE/ISC/NEET
COMPLETE BIOLOGY SOLUTION
(c) Endemism
(d) Biosphere
38. Which of the following statement is/are correct for population ?
(i) The total number of individuals that can be accomodate in an area at a particular time is called
carrying capacity.
(ii) The difference between birth rate and deathrate is called vital index.
(iii) The birth rate, death rate and the growth of a population are determined by the age groups of the
population.
(iv) When a population contains more of pre-reproductive and post reproductive age groups, the
pyramid is bell shaped. It shows that the population is stable.
(a) Only (i) and (iv)
(b) Only (i), (ii) and (iii)
(c) Only (i), (ii) and (iv)
(d) Only (i) and (iii)
39. Which of the following statement is/are correct for interactions ?
(i) The hermit crab is protected by stinging cells of sea anemone.
(ii) Fungi compete for space on a dry edges.
(iii) Flagellates living inside the body of the termites.
(iv) Leeches live on the outer surface of the host.
(a) Only (i),(ii) and (iv)
(b) Only (i) and (iii)
(c) Only (i),(iii)and (iv)
(d) Only (iii) and (iv)
40. Which of the following is mismatch pair ?
(a) More than 1 cm large – Macrofauna
(b) 200u to 1 cm - Mesofauna
(c) 2-20u - Microfauna
(d) 20-200u - Microfauna
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