The pivot joint between atlas and axis is a type of
Fibrous joint
Cartilaginous joint
Synovial joint
Synovial joint
Zygotic meiosis is characteristic of
Marchantia
Fucus
Funaria
Funaria
D.
Funaria
Frog's heart when taken out of the body continues to beat for some time
Select the best option from the following statements
(a) Frog is a poikilotherm
(b) Frog does not have any coronary circulation
(c) Heart is 'myogenic' in nature
(d) Heart is autoexcitable
Only (c)
Only (d)
(a) & (b)
(a) & (b)
Which statement is wrong for Krebs' cycle?
There are three points in the cycle where NAD+ is reduced to NADH + H+
There is one point in the cycle where FAD+ is reduced to FADH2
During conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesised
During conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesised
In case of poriferans the spongocoel is lined with flagellated cells called :
Ostia
Oscula
Choanocytes
Choanocytes
Which of the following RNAs should be most abundant in animal cell?
r-RNA
t-RNA
m-RNA
m-RNA
Which among these is the correct combination of aquatic mammals?
Seals, Dolphins, Sharks
Dolphins, Seals, Trygon
Whales, Dolphins, Seals
Whales, Dolphins, Seals
With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?
Light saturation for CO2 fixation occurs at 10% of full sunlight
Increasing atmospheric CO2 concentration upto 0.05% can enhance CO2 fixation rate
C3 plants responds to higher temperatures with enhanced photosynthesis while C4 plants have much lower temperature optimum
C3 plants responds to higher temperatures with enhanced photosynthesis while C4 plants have much lower temperature optimum
Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation :
X = 12, Y = 7
True ribs are attached dorsally to vertebral column and ventrally to the sternum
X = 12, Y = 5
True ribs are attached dorsally to vertebral column and sternum on the two ends
X = 24, Y = 7
True ribs are dorsally attached to vertebral column but are free onventral side
X = 24, Y = 7
True ribs are dorsally attached to vertebral column but are free onventral side
Lungs are made up of air-filled sacs the alveoli. They do not collapse even after forceful expiration, because of :
Residual Volume
Inspiratory Reserve Volume
Tidal Volume
Tidal Volume