Mdcat-past-papers Quiz

2621. Excretory system consisting of protonephridial tubes are present in phylum:

porifera
annelida
Platyhelminthes
cnidaria

2622. Water vascular system or ambulacral system is a unique and complex system specially present in?

Sponges
Arthropods
Echinoderms
Fishes

2623. Which of the following belongs to chordates:

Spider
Earthworm
Trout Fish
Star fish

2624. Select an anamniotes from the following:

Snake
Parrot
Frog
Crocodile

2625. Select an anamniotes from the following:

Snake
Parrot
Frog
Crocodile

2626. The evolution of birds has long been a difficult issue for biologists until the discovery of Archaeopteryx fossil in 1861. This ancient bird exhibited teeth, a long tail containing 20 vertebrae and wings with movable finger and claws. In the light of mentioned facts who were the ancestors of the birds?

Insects
Pisces
Amphibians
Reptiles

2627. The Archaeopteryx is a fossil bird which processes the characters of both

Fishes and Amphibians
Amphibians & Reptiles
Reptiles and Birds
Birds and mammals

2628. Mammals become dominant in:

Cenozoic Period
Jurassic Period
Mesozoic Period
Paleozoic Period

2629. Shark belongs class

Chondichthyes
Osteichthyes
Echinodermata
Urochordata

2630. Oxidative phosphorylation, synthesis of ATP in the presence of oxygen occurs in:

All types of cell
All anaerobic cells
All primitive cells
All aerobic cells

2631. Which part of chlorophyll molecule absorbs light?

Phytol
Pyrrole ring
Porphyrin ring
Thylakoid membrane

2632. #NAME?

Chlorophyll
Photosystem
Photon
Electron

2633. Photosystem-I has chlorophyll "a" molecule which absorbs maximum light of:

680 nm
780 nm
700 nm
580 nm

2634. Chlorophyll molecule contains:

Mg
Ca
K
Na

2635. The tail of chlorophyll molecule is embedded in:

Membrane of mitochondria
Membrane of S.E.R
Membrane of R.E.R
Thylakoid membrane

2636. Carotenoids absorb light of:

Yellow-orange range
Blue-violet range
Orange-red range
Green range

2637. Chlorophyll 'a' and chlorophyll 'b' differ in one of the functional group that chlorophyll 'a' has:

–CHO
#NAME?
0
0

2638. When we extract carotenoids from its source we see that it is:

Violet in color
Blue green in color
Yellow green in color
Yellow to orange red in color

2639. NADP-nicotinamide adenine dinucleotide phosphate is a carrier of:

#NAME?
O2 Group
Hydrogen Ion
Phosphate group

2640. The type of energy reduced by the enzymes for biological reaction to occur:

Light energy
Activation Energy
Active energy
Heat energy