List of practice Questions

Match the following

List A	List B
A) Stigma	II) Tip of the style
B) Seat of ovules	III) Placenta
C) Basal part of Gynoecium	IV) Ovary
D) Elongated tube	I) Style

Choose the incorrect combination among the following:

Class	Character	Example
1) Xiphosura	Poisonous Claws	Limulus
2) Arachnida	Coxal Glands	Scutigera
3) Crustacea	Biramous appendage	Sarcoptes
4) Diplopoda	Gnathochilarium	Spirostreptus

Choose the correct statements:
1. Population is a group of organisms belonging to a species living in a particular area.
2. Populations of different species in a given habitat, interacting with one another constitute a community.
3. Population is a group of organisms belonging to different species.

Read and find the correct statement from the given below
A. Species is a group of individual organisms with fundamental dissimilarities.
B. Few similar characters are assigned to a higher category in a division.
C. A decrease in number of common characters is observed from species to kingdom.
D. Lower taxa shares more characters within the members.

The production of the flowers in response to light hours in a day is

Arrange the following in sequence in relation to the origin of living organisms
A. Chemo-autotrophs
B. Oxygenic photoautotrophs
C. Anaerobic heterotrophs
D. Anoxygenic photo-autotrophs

Assertion (A): C\(_4\) plant loses only half of the water compared to C\(_3\) plant for the same amount of CO\(_2\) fixed. Reason (R): C\(_4\) photosynthetic system is evolved for maximizing the availability of CO\(_2\) while minimizing water loss.

The ascending order of molecules of the following compounds released during the oxidation of two molecules of pyruvic acid: FADH\(_2\), CO\(_2\), NADH\(_2\)

Find out the correct match Set I A. Carbohydrates
B. Proteins
C. Fats
D. Nucleic acids
Set II i. Nucleosides, Phosphates
ii. Glucose, Fructose, Galactose
iii. Amino acids
iv. Fatty acids, glycerols

Among the following the incorrect pair is:

The reason for the genetic variation in the population of organisms

The closest invertebrate relatives of chordates belong to the phylum:

Assertion (A): It is necessary to know the life history of an ascidian to consider it a chordate.
Reason (R): Ascidians exhibit retrogressive metamorphosis in which larval stages are in a degenerated condition.

Arrange the following in a sequence in primary succession in water:
A: Sedges and grasses
B: Trees
C: Phytoplankton
D: Free floating plants

Assertion (A): Trichoderma polysporum produces cyclosporin A, an immunosuppressive agent.
Reason (R): It is used in organ transplant patients.