IMPORTANT POINTS
→ Ecology : The study of organism where they live
→ Ecology is divided in many branches, population ecology is one of them
→ Enviroment : Study of our surrounding factors and their interaction
→ Organisms where they live is known as habitat
→ They live in fresh water ponds, sea, esturine region and on land. Each habitat has its own characteristics.
→ Population : Group of organisms of same species living in same habitat at a species period.
→ Different organisms of a population interacts differently. It may be interspecific
→ It consists of species, variations, constituents and succession.
→ Biotic community is affected by biotic and abiotic factors.
→ Oragnism interacts with other organism in different ways (1) mutualism (2) competition (3) predation (4) commensalism
1. What is true for the following statements ?
Statement X : Migration of birds is influenced by light.
Statement Y : Reproduction of birds is influenced by light.
Statement Z : In all birds gonads are activated due to increase in intensity of light during summer.
X Y Z
(a) True False False
(b) False True False
(c) True True True
(d) True True False
2. What is true for the given statements ?
Statement X : Birds and Mammals obtain greater body size in cold region than in warm regions.
Statement Y : Birds and Mammals are Homeothermic (warm blooded)animals.
Statement Z : Reptiles are smaller in cold region.
(a) True False True
(b) True True False
(c) True True True
(d) False True True
3. “Spiny lizard” absorbs water from the atmosphere which is appropriate similar functional option for the statement ?
(a) Tongue of Human (b) Hygroscpic roots of orchid
(c) Roots of plants (d) None of these
4. What is true for the following statements ?
Statement X : Marine fishes have chlorine secretory cells.
while riverine fishes have chlorine cells.
Statement Y : Compared to marine water, fluid present
in fish is hypotonic while reverine water
is hypertonic compared to fluid present in fish.
X Y X Y
(A) True True (C) True False
(B) False False (D) False True
5. Which animal is capable of obtaining water by oxidation of lipid.
(a) Rat (b) Earthworm (c) Mole (d) Kangaroo rat
6. 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.
7. Name the animals with freshwater habit in which
(i) endosmosis is possible
(ii) Excess water in removed by green glands
(iii) Greenglands removes water in the from of urine
(a) Fresh water fishes (b) ophiocephalus
(c) Crustacean astucus (d) None of these
8. In snakes realised (actual) natality is less than potential natality; because___
(a) all the eggs are not incubated
(b) enviornmental boomrang (resistance)
(c) Though eggs are incubated they donot reach upto adult stage.
(d) All of these.
9. Indentify me “ My functioning is like an orchid.
(a) Protopterus (b) Spiny lizard
(c) uromastrix (d) Spiny platypus
Graph
10. Crustacian Astacus = Green land
Marine turtle
what is ‘X’ accroding to the information given ?
(a) Salt gland (b) Kidney
(c) None of these (d) chlorine secretory cells
11. Which of the following is correct statement ?
(a) uromatrix lizard stores water in the intestine
(b) Camel stores water in its stomach
(c) Anabus develops accesary respiratory organs to respire in water.
(d) Kangaroo rat undegeoes hibernation.
12. Parasitic animal which is part of bio-geo community and included as zoo planktons and mesofauna of tenestrial ecosystem is___
(a) Moles (b) mites (c) Earthworms (d) leech
13. From the given option which is the appropriate for ecto parasite animal Ascaris, Tapeworm, plas modium, mites
(a) phytoplanktons (b) mesofauna
(c) macrofauna (d) phytoplanktons and mesofauna.
14. Which living organism is seen in the hot water spring having temperature more than 100°C..
(a) Methanogens (b) Thermoacidophils
(c) Helophytes (d) spirokit
15. Find out population density.
Since last 4 years number of lions in a squre forest is 500 (length of forest =10 km)
(a) 1.25 lions/year . k meter2 (b) 12.5 lions/ k meter2 - year
(c) 1.025 lions/ cm2 month (d) 12.5 lions/ k meter2 - month
16. Average human population in a certain time area is 5000 in which 1111 children are produced during an years, find out the birth rate ?
(a) 0.1111 (b) 0.3333 (c) 0.2222 (d) 0.4444
17. In birthrate and deathrate is equal, then what will be the Vital Index ?
(a) = 1 (b) = 100 (c) >100 (d) <100
18. Which option is correct for the given statement .
Statement X : Density dependent factors are intrinsic Reason R : They are generated in population only
(a) Both statement are true
(b) Both statement are false
(c) X is true, y is false
(d) X is false, Y is true
21. Producers --->Decomposers ---->’X’, then what will be ‘X’ ?
(a) Nostoc
(b) Fungi
(c) Both of these
(d) None of these
22. In given chart,what is the problem seen in living organism staying in‘X’ denoted area ?
(a) endosmosis
(b) exosmsis
(c) a & b both
(d) geting water and maintaing it.
23. What is correct for the given statement ?
Statement P : Environmental study is linked with ecology
Statement Q : Ecology is included in environmental study.
(a) Both statement are true
(b) Both statement are wrong
(c) P is right and Q is wrong
(d) P is wrong and Q is right
24. What is the vital Index, if Birht rate is 0 and Death rate = 5 ?
(a) 0 (b) 100
(c) 1 (d) None of these
25. If the Birth rate is 10 and death rate is 0 then what is VITAL INDEX ?
(a) 0 (b) 100 (c) α Infinative (d) 1
26. Which is appropriate for the following statement ?
Statement X : Pacific salmon fish reproduces only once in its life time.
Statement Y : In a reproductive season it lays 2,80,000,000 eggs.
X Y
(a) True True
(b) False False
(c) True False
(d) False True
27. Mycobiont Supplies X to phycobiont and phycobiont supplies Y to mycobiont, then what is true for X and Y ?
(a) X : Mineral element ; Y : Habitat
(b) X : organic nutrients ; Y : Inorganic Nutrient
(c) X : Habitat Y : protection
(d) X : Minerals Y : organic nutrients
28. A plant formed by the combination of algae and fungi is a pioneer of which type of succession ?
(a) Xerosere (b) Hydrosere (c) Mesosere (d) None of these
29. Y↔X having interspecific relations in which animal which is not affected is X shows excretory orgndds which are also seen in Y and is Z located in its gills then.... what are X,Y,Z - ?
(a) X = Termite (b) X = shank
Y = flagelates Y = Tortoise
Z = Tentacles Z = Chlorine cell
(c) X = shank
Y = fish
Z = chlorine secreting cells
(d) All of these (above)
30. What does the given graph shows
(a) (i) Community Ecology (b) (i) Population Ecology
(ii) Population Ecology (ii) Community Ecology
(iii) Population Ecology (iii)Ecosystem Eclogy
(c) (i) Population Ecology
(ii) Community Ecology
(iii) Community Ecology
(d) None of these
31. In a population of salmon fish, potential Natality is 10,000 while realised mortality is 200, then the Vitlal Index =
(a) 50, (b) less then 50 (c) mor then 50 (d) None of these
32. Which of the following is not possible in ecosystem where microflora is absent
(a) Photosynthesis (b) Decomposition (c) Assimillation (d) None of these
33. If marine fish is kept in fresh water, will it survive
(a) Yes, If chlorine cells are placed in its kidney
(b) Yes, If chlorine cells are placed in its green gland
(c) No, Because it can not adapt
(d) No, they can not survive but of yongones hatching out of their eggs can survive
34. What is true for both the organism showing interspecific compitition ?
(a) Both are benefited
(b) more or less harmful effect to both
(c) one is benefited where as other is at loss
(d) None of these
35. If at “t” time population density is N, then what is the equation for the population density at (t+1) time ?
(a) N (t+1) = Nt - [CD+E] - [B+I)]
(b) N (t+1) = Nt+B+I-D-E
(c) N (t+1) = Nt+(B+I)-(D+ E)]
(d) All of these
36. Write appropriate option for antibiosis
(a) Penicillium fungi and certan gram +ve bacteria
(b) Penicillium fungi and certan gram -ve bacteria
(c) Spirocheate and fermicutes
(d) None of these
37. The graph of age related distribution in a village is as following If during 1 year potential mortality = relized mortality, then which type of graph is seen after 1 year ?
39. In which subdivision of aquatic ecosystem thermal stratification in seen ?
(a) marine (b) deep fresh water habitat
(c) marine and fresh water area(d) None of these
40. In which of the following aquatic ecosystems habitat fluid (liquid) is very concetrated compared to body fluid ?
(a) Marine (b) Esturine (c) Riverine (d) pond.
41. Which of the following is true with reference to temperature diffrence ?
(a) 1. Terrestrial Habital > Aquatic Habitat
2. Sea < Deep fresh water lakes
(b) 1. Aquatic Habitat > Terrestrial Habitat
2. Sea < Deep fresh water lake
(c) 1. Terrestrial Habital = Aquatic Habitat
2. Sea < Deep fresh water lake
(d) 1. Terrestrial Habital < Aquatic Habital
2. Sea = Deep fresh water lake
42. Water holding capacity of land depends on ?
(a) Soil composition (b) Grain size
(c) Aggregation of grain (d) All of these
