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This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Organism and Population Set 2
Q1 | If at “t” time population density is N, then what is the equation for the population density at (t+1) time ?
- N (t+1) = Nt - [CD+E] - [B+I)]
- N (t+1) = Nt+B+I-D-E
- N (t+1) = Nt+(B+I)-(D+ E)]
- All of these
Q2 | Write appropriate option for antibiosis
- Penicillium fungi and certan gram +ve bacteria
- Penicillium fungi and certan gram -ve bacteria
- Spirocheate and fermicutes
- None of these
Q3 | In which subdivision of aquatic ecosystem thermal stratification in seen ?
- marine
- deep fresh water habitat
- marine and fresh water are
- None of these
Q4 | In which of the following aquatic ecosystems habitat fluid (liquid) is very concetrated compared to body fluid ?
- Marine
- Esturine
- Riverine
- pond.
Q5 | Which of the following is true with reference to temperature diffrence ?
- 1. Terrestrial Habital > Aquatic Habitat 2. Sea < Deep fresh water lakes
- 1. Aquatic Habitat > Terrestrial Habitat 2. Sea < Deep fresh water lake
- 1. Terrestrial Habital = Aquatic Habitat 2. Sea < Deep fresh water lake
- 1. Terrestrial Habital < Aquatic Habital 2. Sea = Deep fresh water lake
Q6 | Water holding capacity of land depends on ?
- Soil composition
- Grain size
- Aggregation of grain
- All of these
Q7 | What true for the following statements ?Statement X : During evolution many species, by continous development of their internal environment, made their physiologycal processes more efficient.Statement Y : Orgenisms show adaptations in order to survive in the enviornmentX Y X Y
- True True
- False True
- True False
- False False
Q8 | In which of the following organism water is stored in its transformed from and not water as such ?
- camel
- Uromatrix
- Spiny tailed lizard
- rat
Q9 | Which path is followed by plants as a part of adaptation in an ecosystem where Kangaroo rat is living ?
- C3 Path
- C4 Path
- CAM Path
- TCA Path
Q10 | Which is true for the following statements ?Statement X : Cursorial animals have spindle shaped bodyStatement Y : Because of narrow head they can prepare burrow properlyX Y
- True False
- False True
- False False
- True True
Q11 | What is the temperature at which archeobacteria can survive ?
- 90 C?
- 100 C?
- 110 C?
- All of these
Q12 | To whom can we correlate the young one developing from the eggs of Daphnis which are laid at normal room temperature ?(i) queen bee (ii) worker bee (iii) male (drone) bee
- i, ii
- i, iii
- ii, iii
- i, ii,iii)
Q13 | Which is appropriate option if we take ‘T’ for correct statement and’F’ for wrong statement ?(i) Energy pyramids are always upright.(ii) Detritus food chain begins with dead organic matter(iii) C4 path is the only path seen in xerophytes(iv) Biodiversity is less in equatorial region because of more sunlight(v) At normal Temperature daphnis lays parthenogenetic eggs. which develops into male(0? )
- TFTTF
- TFFFF
- FFFTF
- TFTFF
Q14 | Increase and decrease in a population in one of the places in USA, because of sandy cyclone isgiven below.Which type of graph is possible for total no. of individuals in a population v/s month ?Month Birth rate Imigration Death EmigrationJuly 40 100 30 20August 100 200 50 45September 200 800 100 10October 100 -- 5000 3000
- S. Shaped
- J. Shaped
- irrupative
- None of these
Q15 | Hygroscopic skin is seen in.....
- Kangaroo rat
- Uromatrix
- Spiny tailed lizard
- Camel
Q16 | What is true for marine animals ?
- Because of exosmosis they drink sea water
- As they drink sea water exosmosis occurs
- Because of exosmosis body fluid become hypotonic, so they drink sea water
- None of these
Q17 | In order to find out VITAL INDEX in Rampur Village, following information was gatheredDeath Rate = 1/x Birth Rate = zAverage population = 1/yWhat is the Vital Index ?
- xyz X 100
- z/xy =100
- xy/z X 100
- 100/xyz
Q18 | What is the true for the community ecology diagram ?
- Involvement of 4 individuls of a population
- Involvement of 4 population of a species
- Involvement of 4 species of a community
- Involvement of 4 speces of 4 ecosystem
Q19 | Match the column I with column IIColumn I Column II(1) Astacus (p) Hydrophiic skin(2) Marine turtle (q) green gland(3) Spiny lizard (r) water storage in intestine(4) Uromatrix (s) salt glands
- (1-q), (2-s), (3-p) (4-r)
- (1-s), (2-q), (3-p) (4-r)
- (1-s), (2-p), (3-q) (4-r)
- (1-p), (2-q), (3-s) (4-r)
Q20 | Which of the following is incorrect if ‘O’ sign is used for benificial and ‘+’ sign for harmful ?
- Penicillium <--> Gram +ve bacteria ; Penicillium: ‘+’
- Rhizobium <---> palnt - leguminosae family : Both ‘O’
- Tiger <--> Rabbit ; Tiger : ‘O’
- Shank fish <---> Suckerfish ; Suckerfish ; ‘O’
Q21 | What will happen if ‘X’ which is related to this reaction is absent ?
- Deconposition, essential process like death, will stop
- Damage to ecosystem
- Begining of the food chain is not possible
- All the statements given are correct
Q22 | In the section of lichen which layer is seen just below “ upper cortex”
- Medulla
- Algal layer
- lowercortex
- All of these
Q23 | What is true for the given statements ?Statement X : Protopterus aestivate during winter to overcome dry periodStatement Y : The process of aestivation in protopterus is to overcome unfavourable condition
- Both statements are true
- X-Correct Y- wrong
- Both statements are wrong
- X- wrong Y- correct
Q24 | What is true for the given statement ?Statement X : Most of the animals and almost all the plants cannot keep up their internal enviornment constantStatement Y : process of osmoregulation in plants is an example of this
- Both statements are true
- X - correct, Y- wrong
- Both statements are wrong
- X- wrong, Y- correct
Q25 | X= Arthropods, Y = Mollusca, z = Coelenterates :-If the X by using Y, lives benifical life with z, then which of the following is correct example ?
- X = cockroachY = pearl oyester Z = Hydra
- X = Millipede Y = pila Z = jellyfish
- X = Hermit crab Y = Gastropoda Z = sea anenone
- All of these