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Home » General Knowledge » General Science » Aptitude Test - 23
1.Which light modulates osmoregulation of guard cell?
A. Green
B. Orange
C. Red
D. Green
2.What is guttation?
A. Exudation of xylem sap
B. Root pressure
C. Radial movement
D. Exudation of xylem sap
3.Name the specialized pores from where guttation takes place.
A. Stomata
B. Hydathodes
C. Guard cell
D. Stomata
4.Which of the following statement is INCORRECT for transpiration?
A. It occurs by stomata, lenticels, and cuticle
B. Water comes out as water vapour
C. It occurs in all plants
D. It occurs by stomata, lenticels, and cuticle
5.Those elements whose absence prevent plants from completing its life cycle are called___________
A. Micro element
B. Macro element
C. Nonessential elements
D. Micro element
6.Which one of the following is NOT a criteria for an element to be called as essential?
A. These elements need not to take part in growth and development
B. The function of an element must not be replaceable
C. The element should be involved in plant metabolism
D. These elements need not to take part in growth and development
7.Who proposed the idea of essential mineral nutrients of the plant?
A. Leonhart Fuchs
B. Aristotle
C. Arnon and Stout
D. Leonhart Fuchs
8.Name the technique which involves the growth of a plant by suspending their roots in the air?
A. Diffusion
B. Osmosis
C. Hydroponics
D. Diffusion
9.Which of the following is a mineral nutrient?
A. Carbon
B. Nitrogen
C. Hydrogen
D. Carbon
10.Which of the following element is needed by plants in a very small quantity?
A. Phosphorus
B. Carbon
C. Sodium
D. Phosphorus
11. Name the mineral element which is required by a plant in a great amount?
A. Calcium
B. Cobalt
C. Phosphorus
D. Calcium
12.Deficiency of which mineral causes dark green coloration of the leaves?
A. Phosphorus
B. Potassium
C. Nitrogen
D. Phosphorus
13.Which of the following is deficiency symptom of magnesium?
A. Chlorosis in young leaves
B. Chlorosis in older leaves
C. Spindly and woody stem
D. Chlorosis in young leaves
14.Which of the following class of enzyme does not need manganese for its efficient activity?
A. Dehydrogenase
B. Decarboxylases
C. Kinases
D. Dehydrogenase
15.The study of living organisms with the environment is known as?
A. Ecosystem
B. Environment
C. Community
D. Ecosystem
16.Which of the following describe the study of group of the population?
A. Synecology
B. Autecology
C. Biomes
D. Synecology
17.What is the climate pattern in areas of limited size or immediate surroundings of plant and animal?
A. Mixed climate
B. Macroclimate
C. Microclimate
D. Mixed climate
18.Which of the following climatic zone lies around 40°- 60° latitude?
A. Tropical
B. Subtropical
C. Arctic
D. Tropical
19.A relatively dense layer of band which is found in the thermosphere is known as?
A. Troposphere
B. Mesosphere
C. Stratosphere
D. Troposphere
20.Which of the following parameter of light is NOT required by plants to grow?
A. Wavelength of light
B. Intensity of light
C. Duration of light
D. Wavelength of light
21.What is pedology?
A. Study of the effect of light on plant growth
B. Study of leaves
C. Study of climate
D. Study of the effect of light on plant growth
22.Name the term which is used for the water present in the soil that can be utilized by the plants.
A. Chresard
B. Humus
C. Gravitational water
D. Chresard
23.Name the type of water stored in the soil in the form of hydrated oxides of iron, silicon, and aluminium?
A. Gravitational water
B. Capillary water
C. Hygroscopic water
D. Gravitational water
24.Vegetation of tropical deciduous forest falls under which of the following categories?
A. Mesotherm
B. Megatherm
C. Microtherm
D. Mesotherm
25.Genetically different population with the same physical features is known as ____________
A. Ecosystem
B. Ecads
C. Community
D. Ecosystem
26.Name the group of species which exploit the abiotic and biotic resources in a similar way?
A. Guild
B. Ecads
C. Biomes
D. Guild
27.Who proposed the term ecosystem?
A. Grinnel
B. Turesson
C. A.G. Tansley
D. Grinnel
28.Name the organisms that manufacture organic compounds from simple inorganic compounds without using sunlight?
A. Detrivores
B. Organotrophs
C. Phototrophs
D. Detrivores
29.Which of the following organism eats feces?
A. Fungus
B. Bacteria
C. Earthworm
D. Fungus
30.Which of the following type of productivity counts the total fixation of energy by photosynthesis?
A. Secondary productivity
B. Primary productivity
C. NPP
D. Secondary productivity
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