What type of cartilaginous tissue is found in the inter-vertebral discs?
Costal cartilage
Hyaline cartilage
White fibrous cartilage
Yellow elastic cartilage
Which of the following statements are true for 'Motor cortex'?
I. It is located in the frontal lobe of cerebral cortex.
II It contains pyramidal cells.
III. It is responsible for all visual functions.
IV. It is essential for our thought processes.
V. It stimulates wakefulness.
VI. It regulates voluntary muscular movements.
I, II, III and V
II, III, IV and V
II, IV, V and VI
I, II, IV and VI
Identify the correct statements in relation to C4 photosynthesis.
Kranz anatomy is an essential feature for C4 plants
C4 plants have higher water use efficiency than C3 plants
Photorespiration can be minimised when C3 pathway is in operation
Conversion of oxaloacetate to malate occurs in the bundle sheath cells
Which of the following factor(s) increase blood pressure?
Increase of cardiac output
Constriction of blood vessel
Activation of parasympathetic nerve
Increase of blood volume
Proteins helping in kinetocore formation of yeast are
CBF2 and Kar3 P
CBF2 and CBF3
CBF3 and Kar3 P
CBF2, CBF3 and Kar3 P
The frequency of crossing-over occurring between two genes located on the same chromosome depends on
length of the chromosome
position of the centromere
activities of two genes
distance between two genes
D.
distance between two genes
The frequency of crossing-over occurring between the two genes located on the same chromosome is only directly proportional to the distance between the two genes. Hence, the closer the two genes are to one another on a chromosome, the greater will be their chance of being inherited together.
However, genes located farther away from each other on same chromosome are more likely to be separated during recombination. Other factors giving in the options such as length of chromosome, position of centromere and activities of two genes does not have any relation with the crossing-over and recombination.
Cross-pollination through insect agent is called
anthropophily
malacophily
entemophily
ornithophily
Cleistogamous flowers are
bisexual flowers which remain opened
bisexual flowers which remain closed
open female flower
open male flower
Anish is having colour blindness and married to Sheela, who is not colourblind. What is the chance that their son will have the disease?
100%
50%
25%
0%