Kranz anatomy is one of the characteristics of the leaves of
potato
wheat
sugarcane
sugarcane
C.
sugarcane
Sugarcane is a C4-plan. C4-plants are characterised by the presence of Kranz-type of anatomy. In this, the leaf mesophyll is undifferentiated and its cells (having a normal type of granola chloroplasts) occur in concentric layers around vascular bundles, later is surrounded by large-sized bundle sheath cells (having large -sized agranal chloroplasts) which are arranged in a wreath like manner.
ABO blood grouping is controlled by gene I, which has three alleles and show codominance, There are six genotypes. How many phenotypes in all are possible.?
Six
Three
Four
Four
Jaundice is a disorder of
excretory system
skin and eyes
digestive system
digestive system
Crocodile and penguin are similar to whale and dogfish in which one of the following features?
possess a solid single -stranded central nervous system
lay eggs and guard them till they hatch
possess a bony skeleton
possess a bony skeleton
An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell shape is called
thylakoid
endoplasmic reticulum
plasmalemma
plasmalemma
Black (stem) rust of wheat is caused by
Alternaria solani
Ustilago nuda
Puccinia graminis
Puccinia graminis
Transport of food material in higher plants takes place through
companion cells
transfusion tissue
tracheids
tracheids
Three of the following statements about enzymes are correct and one is wrong. which one is wrong?
Enymes require optimum pH for maximal activity
Enzymes are denatured at high temperature but in certain exceptional organisms they are effective even at temperatures 80o-90o C
Enzymes are highly specific
Enzymes are highly specific
