Q.1.
what does the given graph shows
unit-10_ch-4_que_no-147_img_no1.png
Q.2.
To whom can we correlate the young one developing from the eggs of Daphnia which are laid at normal room temperature ? (i) queen bee (ii) worker bee (iii) male (drone) bee
Q.3.
Identify me “ My functioning is like an orchid.
Q.4.
Water holding capacity of land depends on ?
Q.5.
The term precipitation includes:
Q.6.
In given chart, what is the problem seen in living organism staying in ‘X’ denoted area ?
unit-10_ch-4_que_no-153_img_no1.png
Q.7.
Write appropriate option for antibiosis
Q.8.
Identify the biome that is not correctly matched with the physical parameters given in corresponding Column II and Column III
  Biome Mean annual temperature [°C] Mean annual Precipitation [cm]
A Tropical forest 20 – 25 130 - 430
B Arctic and alpine tundra -12 -2 10 - 125
C Coniferous forest -5 – 5 100 – 200
D Temperate forest 8 - 22 50 - 225
Q.9.
To get pollinated by a bee, the Mediterranean Orchid, Ophrys, employs
Q.10.
Mycorrhizae are the example of
Q.11.
Annual migration does not occur in the case of
Q.12.
Which of the following associations shows mutualism?
Q.13.
Animals in cold regions have fur because
Q.14.
Select the combination of correct statements: (i) Populations evolve to maximise their reproductive fitness also called Darwinian fitness (higher r value) in the habitat in which they live. (ii) The population growth r is inversely proportional to generation time. (iii) The housefly, which has a short life span and produces a large number of eggs could be considered as K selected species. (iv) Under a particular set of selection pressure, organisms evolve towards the most efficient reproductive strategies. (v) Life history traits of organisms have evolved in relation to the constrains imposed by biotic and abiotic factors in their habitat.
Q.15.
Assertion: Predation and parasitism are considered to be negative interactions. Reason: Parasites and predators limit the population on their host species.
Q.16.
Which is the example of intraspecific competition for food ?
Q.17.
Which option is correct for the given statement . Statement X : Density dependent factors are intrinsic Reason R : They are generated in population only
Q.18.
If the Birth rate is 10 and death rate is 0 then what is VITAL INDEX ?
Q.19.
Which of the following is not possible in ecosystem where microflora is absent
Q.20.
In which of the following aquatic ecosystems habitat fluid (liquid) is very concentrated compared to body fluid ?
Q.21.
Mathc column I with column II
Column - I Column - II
Mutualism (p) Barnacles
Competition (q) Tiger
Predation (r) Mites
Parasitism (s) Sea anemone
Q.22.
When exposed to cold temperatures, which of the following is responsible for maintaining constant body temperature in humans
Q.23.
The Great Barrier Reef along the east coast of Australia can be categorised as
Q.24.
Which of the following is not a factor that would limit the growth of a population?
Q.25.
In ocean, Red, Brown and green algae are distributed at different depths depends on:
Q.26.
Which of the following statement is false about high altitude for the compensation of low oxygen availability? (i) Increasing RBC count. (ii) Increasing breathing rate. (iii) Increasing binding affinity of haemoglobin. (iv) Continue altitude sickness. (v) Decrease breathing rate.
Q.27.
Total number of individuals of a species per unit area and per unit time is called:
Q.28.
Which of the following statement(s) are wrong? I. Equation of population density, D = S/N. II. Population density varies from time to time. III. Increase in number of individuals in a population through reproduction under given environmental conditions is called natality. IV. Migration will not change population size.
Q.29.
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.
Q.30.
Hygroscopic skin is seen in.....