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Subject: Biology, asked on 10/12/18

what is meant by elnino effect?

Subject: Biology, asked on 2/12/18

Environmentalists are worried about frequent occurrence of typhoons and
cloudbursts, increase in surface temperature of the sea etc., and attribute them
to climate change. Explain, in detail, the phenomenon responsible for climate
change.....this question is of 4 marks so answer accordingly

Subject: Biology, asked on 29/11/18

Name the green houses gases how do they affect life on aarth ?( b)describe the cases of eutrophication of lakes

Subject: Biology, asked on 19/11/18

A factory discharges sewage at a point 'X' in the river. Explain the chnages occurring in water as it flows downstream.

Subject: Biology, asked on 14/11/18

pls answer ques 6

Subject: Biology, asked on 13/11/18

Sir we know chlorophyll a has peak on 429 and 660 nm then why in ans it is give that it is between 400 to 500nm it should be between 500 to 600nm?????????

Subject: Biology, asked on 21/9/18

Which one of the following is mainly responsible for greenhouse effect?(a) so2 ( b)CO2 (c)co (d)o2 .which option is right ? Please tell

Subject: Biology, asked on 21/9/18

If a waterbody is contaminated with a toxicant it's biomagnification will be more marked in (a) water (b) plankton's (c) small fishes (d) birds

Subject: Biology, asked on 8/8/18

Why ozone hole forms over Antartica region only? How will it enhance UV radiation effect?

Subject: Biology, asked on 1/8/18

How annelid worm Tubifex and Chironomus larvae indicate polluted water ??

Subject: Biology, asked on 30/5/18

Pls explain Q.112
Q.112. During phloem loading
(1) Loss of solute particles causes increase of water potential in the phloem
(2) Water returns to the xylem
(3) Sucrose enters in the sieve tube cell by passive transport
(4) Creates hypertonic cordition in the sieve tube ceil

Subject: Biology, asked on 17/5/18

Why dermatologist advice patients with skin problems not to wear violet colour clothes?

Subject: Biology, asked on 26/3/18

What is el nino effect? How can it be accounted from biodiversity loss?

Where is this in Ncert?

Subject: Biology, asked on 25/3/18

Q. Which one of the following phyla is correctly matched with its two general characteristics . 
(1) Mollusca - Normally oviparous and development through a trochophore or veliger larva 
(2) Arthropoda- Body divided into head thorax and abdomen and respiration by tracheae
(3) Chordata - Notochord at some stage and separate anal and urinary opening to the outside 
(4) Echinodermata - Pentamerous radial symmetry and mostly internal fertilization

Subject: Biology, asked on 17/3/18

Why do you think this method i.e. storage of nuclear waste should be done in container buried within rocks about 500m deep) of disposal is not agreeable to many people?

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