Plant bends towards the source of light on account of the movement of curvature known as
Answer: D
Bending towards light is phototropism.
Auxin accumulates on the shaded side of the shoot tip, so cells there elongate more and the shoot curves towards the light. Geotropism is a response to gravity, thigmotropism to touch and chemotropism to chemicals.
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Which of the following oils is gaining popularity as a cooking option in India?
Answer: B
Coconut oil is the option recorded here as gaining popularity for cooking in India.
Long the staple cooking medium of Kerala and coastal Karnataka, it has regained favour more widely as views on saturated fat have been revised; it is also stable at high temperature because it is highly saturated.
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Agrostology is the study of
Answer: C
Agrostology is the study of grasses, from the Greek agrostis.
It matters far beyond lawns: the grass family includes every cereal - wheat, rice, maize, barley, oats - along with sugarcane and bamboo, and grasses cover about a fifth of the land surface.
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In which of the cerebral lobes is the speech centre located?
Answer: A
The speech centre lies in the frontal lobe.
Broca's area, in the lower frontal lobe of the dominant hemisphere - usually the left - controls the production of speech. Wernicke's area, in the temporal lobe, handles comprehension, and damage to the two gives quite different kinds of aphasia.
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Which of has following group of gases contribute to the 'Green House Effect' ?
Answer: A
Carbon dioxide and methane are the principal greenhouse gases from human activity.
Both are triatomic or polyatomic molecules that absorb infrared radiation. Methane traps far more heat per molecule but is present in much smaller amount and lasts about a decade, while carbon dioxide persists for centuries.
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What is the mode of nutrition of mushroom?
Answer: D
A mushroom is saprophytic.
It has no chlorophyll and cannot photosynthesise, so it secretes enzymes onto dead organic matter and absorbs the digested products. The mushroom itself is only the fruiting body; the feeding mycelium is spread through the substrate.
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In Pedology we study about
Answer: C
Pedology is the study of soil - its formation, classification and distribution.
The name comes from the Greek pedon, ground. It is not to be confused with pedagogy, the study of teaching.
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Our major foods, fibres, spices, fruits and beverage crops are
Answer: A
Our major foods, fibres, spices, fruits and beverages come from flowering plants, the angiosperms.
They are the dominant land plants, with about 300,000 species, and include every cereal, pulse, oilseed and fruit crop. Gymnosperms supply timber and resin but almost no food.
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What is study of heart ?
Answer: D
The study of the heart is cardiology, from the Greek kardia.
It covers heart disease, its diagnosis and treatment. Dermatology deals with skin and demography with populations.
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Primary phloem develops from
Answer: D
Primary phloem develops from the provascular (procambial) tissue.
The procambium is the primary meristem laid down behind the growing point; it gives rise to primary xylem inward and primary phloem outward. Secondary phloem comes later, from the vascular cambium.
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