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Vaishnavi
Subject: Biology
, asked on 21/4/18
If concentration of co2 (formed from malic acid)increases how does it effect the rate of transpiration and stomatal opening
Answer
1
Prerna Varshney
Subject: Biology
, asked on 23/3/18
(a) Explain Darwinian theory of evolution with the help of one suitable example. State the two key concepts of the theory (pls dont give answer given in prev year paper solution). andproper explaination
Answer
1
Rayyan Mansuri
Subject: Biology
, asked on 23/3/18
please answer this q no.2
2. Which endocrine gland is responsible for regulation of menstrual cycle in an adult woman ?
(A) Thymus
(B) Pancrease
(C) Thyroid
(D) Testis
Answer
1
Sandra Saju
Subject: Biology
, asked on 23/3/18
Define gene drift.
Answer
1
Rayyan Mansuri
Subject: Biology
, asked on 22/3/18
Please answer thus with appropriate explanation of the answer question number 24
24) Arrange the main stages in the origin of Life in Chronological
order. Choose the correction option.
(
A
)
C
,
H
,
N
,
O
→
M
a
c
r
o
m
o
l
e
c
u
l
e
s
→
C
e
l
l
s
→
P
r
e
c
e
l
l
s
(
B
)
C
,
H
,
N
,
O
→
H
2
O
,
H
2
,
N
H
3
,
C
H
4
→
M
a
c
r
o
m
o
l
e
c
u
l
e
s
→
C
o
a
c
e
r
v
a
t
e
s
(
C
)
H
2
O
,
H
2
,
N
H
3
,
C
H
4
→
M
a
c
r
o
m
o
l
e
c
u
l
e
s
→
M
i
c
r
o
m
o
l
e
c
u
l
e
s
→
C
o
a
c
e
r
v
a
t
e
s
(
D
)
C
,
H
,
N
,
O
→
M
i
c
r
o
m
o
l
e
c
u
l
e
s
→
p
r
e
c
e
l
l
s
→
C
o
a
c
e
r
v
a
t
e
s
Answer
1
Rayyan Mansuri
Subject: Biology
, asked on 22/3/18
Please answer this with appropriate explanation of the answer question number 17 and 18 in the same window please
Q.17) What is the concentration of DDT in fish eating birds?
(A) 25 ppm
(B) 0.5 ppm
(C) 2 ppm
(D) 0.003 ppm
Q.18) Name the animal where sex ratio is effected by temperature.
(A) Earthworm
(B) Rotifers
(C) Ascaris
(D) Frog
Answer
1
Rayyan Mansuri
Subject: Biology
, asked on 22/3/18
Please answer thus with appropriate explanation of the answer question number 50:
50). State the Location and function of Crista in the structure of internal car.
(A) On the roof of scalamedia , for hearing.
(B) On Ampulla, to maintain equilibrium.
(C) On Ampulla, For hearing.
(D) Organ of corti, to maintain equilibrium.
Answer
1
Rayyan Mansuri
Subject: Biology
, asked on 22/3/18
Please answer this with appropriate explanation of the answer question number 47
47. If thylakiod are removed from the chloroplast and kept in water and CO
2
medium, the sugar is not synthesised, because.
(A) Non cyclic phosphorylation is not take place.
(B) Absence of enzymes for calvin cycle.
(C) Cyclic phosphorelation is not take place.
(D) Photolysis of water is not take place.
Answer
1
Prerna Varshney
Subject: Biology
, asked on 22/3/18
What role does an individual organism play as per Darwin’s theory of natural selection? explain your answer properly( pls donot give answer as per marking schme )
Answer
1
Sandra Saju
Subject: Biology
, asked on 19/3/18
What did Louis Pasteur's experiment on 'killed yeast' demonstrate ?
Answer
2
Sandra Saju
Subject: Biology
, asked on 17/3/18
Compare the conclusion drawn from Urey - Miller experiment with the theory of spontaneous generation.
Answer
1
Sandra Saju
Subject: Biology
, asked on 9/2/18
(a) How did Darwin explain adaptive radiation ? Give another example exhibiting adaptive radiation.
(b) Name the scientist who influenced Darwin and how ?
Answer
2
Rayyan Mansuri
Subject: Biology
, asked on 2/12/17
please answer question 30
Answer
1
Rayyan Mansuri
Subject: Biology
, asked on 2/12/17
please answer
Answer
1
Lauren
Subject: Biology
, asked on 24/11/17
Pls answer
Q.12. The study of
(i) Fossils of dinosaurs
(ii) Forelimbs of cheeta, bat and human
(iii) Thorns of
Bougainvillae
and
tendril Cucurbita
.
Show that evolution of life forms has indeed taken place on earth. Explain.
Answer
1
1
2
3
4
5
Next
What are you looking for?
2. Which endocrine gland is responsible for regulation of menstrual cycle in an adult woman ?
(A) Thymus
(B) Pancrease
(C) Thyroid
(D) Testis
24) Arrange the main stages in the origin of Life in Chronological
order. Choose the correction option.
Q.17) What is the concentration of DDT in fish eating birds?
(A) 25 ppm
(B) 0.5 ppm
(C) 2 ppm
(D) 0.003 ppm
Q.18) Name the animal where sex ratio is effected by temperature.
(A) Earthworm
(B) Rotifers
(C) Ascaris
(D) Frog
50). State the Location and function of Crista in the structure of internal car.
(A) On the roof of scalamedia , for hearing.
(B) On Ampulla, to maintain equilibrium.
(C) On Ampulla, For hearing.
(D) Organ of corti, to maintain equilibrium.
47. If thylakiod are removed from the chloroplast and kept in water and CO2 medium, the sugar is not synthesised, because.
(A) Non cyclic phosphorylation is not take place.
(B) Absence of enzymes for calvin cycle.
(C) Cyclic phosphorelation is not take place.
(D) Photolysis of water is not take place.
(b) Name the scientist who influenced Darwin and how ?
Q.12. The study of
(i) Fossils of dinosaurs
(ii) Forelimbs of cheeta, bat and human
(iii) Thorns of Bougainvillae and tendril Cucurbita.
Show that evolution of life forms has indeed taken place on earth. Explain.