List of practice Questions

In CAM pathway, the stomata :

Which of the following statements are true regarding the nature of cell wall of different microorganisms?
A. Cell wall of bacteria is composed of true peptidoglycan a complex having muramic acid and cross links of L-amino acids.
B. Membrane lipids of Archaea contains branched chains attached to glycerol by ether linkage.
C. Cell wall of fungi are majorly made up of chitin.
D. Virus and viroids lack cell wall.
E. Cell wall is absent in mycoplasma.
Choose the correct answer from the options given below:

Formation of gas bubble leading to collapse of tension in liquid phase during water transport in xylem is called:

During operation of C2 oxidative photosynthetic cycle, molecules move from one organalle to another in following manner:
A. Glycine is transported to mitochondria
B. Glycolate is transported to peroxisome
C. Serine is transported to peroxisome
D. Glycerate is transported to chloroplast.
Choose the correct answer from the options given below:

Given below are two statements:
Statement I: It is valid to accept the applicability of generic name Cecropia for moths as well a tropical tree species.
Statement II: According to nomenclatural codes, same names are not allowed across the codes.
In the light of the above statements, choose the most appropriate answer from the options given below:

Match List I with List II

LIST I		LIST II
A	Hedyserum cornutum L. 1763 (==) Hedyserum spinosum L. 1759	I	Tantonym
B	Acacia nilotica ssp nilotica	II	Nothospecies
C	Malus malus	III	Nomenclatural synonym
D	Salix aurita X Salix caprea	IV	Autonym

Choose the correct answer from the options given below:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: In gametophytic self-incompatible flowering plants, the direction of information to inhibit pollen tube is from pistil to pollen.
Reason R: The female determinants localized in the pistil interact with the pollen tubes in the style or ovule to inhibit the incompatible tube.
In the light of the above statements, choose the most appropriate answer from the options given below:

The type of embryogeny in which the apical cell of a 2-celled proembryo divides transversely and both the daughter cells contribute to the development of embryo is known as

For commercial production of hybrid seeds, the three lines namely A, B and C refer to:

Ultrastructural details of constituent cells of female gametophyte was first explained by:

The zone of transition between two communities is called:

The correct order for the process of plant succession is:
A. Migration
B. Nudation
C. Ecesis
D. Stabilization
E. Reaction
Choose the correct answer from the options given below:

Match List I with List II

LIST I		LIST II
A	Gloger rule	I	Tail, snout, ear and legs of mammals
B	Bergman rule	II	Bird wings
C	Allen rule	III	Size of animal and body parts
D	Rensch rule	IV	Effect on coloration

Choose the correct answer from the options given below:

A specimen is termed ______,when in the absence of a holotype it is selected from the originalmaterial cited by the author.

Cerasus cornuta was first identified and named by Wallich but he failed to get it in a valid manner. Subsequently, it was validly published by Royle, Therefore, its scientific name would be correctly written as:

Match List I with List II

LIST I Common Name		LIST II Edible Protein
A	Papaya	I	Pericarp
B	Sapodilla	II	Mesocarp
C	Banana	III	Pericarp, Placenta
D	Guava	IV	Mesocarp, endocarp

Choose the correct answer from the options given below:

The first step in protein synthesis is the binding of the small ribosomal unit to the ribosome binding site of the mRNA that contains one of the following codons:

Correct sequence for raw cotton processing into yarn and woven clothes is:
A. Ginning
B. Picking
C. Combing and drawing of drafting
D. Baling
E. Carding
Choose the correct answer from the options given below:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Y-shaped or 2-channel energy flow model of E.P. Odum is more realistic than linear energy flow model of Lindeman.
Reason R: Y-shaped model is realistic because it has both grazing and detritus food chains.
In the light of the above statements, choose the most appropriate answer from the options given below:

Vivipary can be observed in-

Specialized chromosomes associated with larvae of some flies are called:

Homologus chromosomes containing identical gene sites along their length called:

Satellite DNA is absent in:
A. Plasmid
B. Prokaryotes
C. Eukaryotes
D. Drosophila
E. Yeast
Choose the correct answer from the options given below:

Age pyramid having a bell-shaped polygon denotes:

Mutations occuring in cell other than germ cells are known as: