Biology Mock Test-4

Which of the following is not syncytial?

The contraction of the heart of frog commences from

If both the anthers and filaments are fused together to form a compact structure with sigmoid appearance the condition is termed as

Which of the following is the correct sequence of layers in typical monocot root (from outer surface to inside)?

List of endangered species was released by

In a National Park protection is provided to

Gene bank is collection of

Biosphere reserve project was started in India during

Gene amplification using primers can be done by

c DNA is

Bollworm attacks

A transgenic plant having higher storage protein is

Analyse the following pairs and identify the correct option given below.
I. Chromoplasts- Contain pigments other than chloropyll
II. Leucoplasts – Devoid of any pigments
III. Amyloplasts – Store proteins
IV. Aleuroplasts – Store oils and fats
V. Elaioplasts – Store carbohydrates

All plastids have similar structure because they can

Addition of new cell wall particles amongest the existing ones is

A stack of 20-50 thylakoids in a chloroplast forms

Bacteria is included in which of the following kingdom?

A system of classification in which a large number of traits are considered is

For production of haploids, we culture

Devine and Collego are two trade names in agriculture. They are used as

Azolla increases soil fertility of

A major application of embryo culture is in

In a river if its BOD percentage is high then

Electrostatc precipitators are extensively employed to control

Chronic exposure to arsenic causes

Bhopal traged of 1984 was caused by the leakage of gas

H. M. S. Beagle is associated with which scientist?

Finding of Miller’s experiment on origin of life has provided evidence for the

Coacervates belongs to category of

An example of reproductive isolation is

DNA associated with highly basic proteins is called

Clover leaf model belongs to

A person with XXY sex chromosomes suffers from

A gamete normally contains

Which of the following is the most toxic excretory product?

Biscuspid valve regulates the flow of blood from

Artery differs from vein in having

Accessory excretory organs of man are

Enterokinase is a/an

Carbohydrates ingested in the diet are hydrolyzed by the enzyme

Bilirubin and biliverdin are

Ascorbic acid is also known as

HIV codes for the gene (s)

Culexcarries which of the following disease?

Antibodies in our body are produced by

African sleeping sickness is caused by

Graffian follicles contain

Failure of descent of testis in scrotal sacs is called

Cessation of menstrual cycle in a woman is called?

Acrosome of sperm is formed from

In bony vertebrates, the formation of bone is often preceded by the presence of a

Excessive pulling of ligaments between two bones causes

Appendicular skeleton is

Accumulation of which of the following in muscle causes fatigue?

Lactic acid bacteria convert milk into curd and improves its nutritional quality by enhancing vitamin

Enzyme that changes glucose to ethyl alcohol is

Confusion technique

Antibiotics are mostly got from

Gigantism and acromegaly are caused due to increase of

Endocrine glands differ from other glands, because they secrete

Brain depends on blood for the supply of

After 14 years of age among men, which gland disappears?

Classical experiment to prove essentially of CO₂ for photosynthesis was given by

Calvin cycle is

Biosynthetic phase of photosynthesis is helpful in the formation of

A reduction in the quantity of oxygen evolved during photosynthesis may be observed at light having wavelenght

Water vascular system is characteristic feature of phylum

The long neck of camel is due to

Mammalian brain differs from an amphibian brain in possessing

Calotes versicolor belongs to class

Genetic dwarfness can be overcome by treating it with

Ethylene is involved in

Auxin is synthesized in which part of the plant?

A physiological response to the duration of light and darkness is a

If a student wants to study about birth rate, death rate, sex ratio, age distribution, etc, of a population, the information is obtained from

Halophytes are peculiar in having

Due to high degree of zoophily, tropical rain forests are rich in

An association between two individuals or populations where both are benefitted and where neither can survive without the other is

Function of embryonal suspensor in angiosperms is to

Entry of pollen tube through micropyle is termed as

Double fertilization was first described by

Banana is seedless (or sedimentary seeds) because it is developed by

Conversion of ATP to ADP releases

Both respiration and photosynthesis require

At a temperature above 35⁰ C

Alcoholic fermentation takes place in the presence of

Guttation is the release of liquid water from veins at leaf margins. It is caused by

Dry wooden stakes, if driven into a small crack in a rock and then soaked, can develop enough pressure to split the rock. Such pressure is built up through the phenomenon of

Apoplastic path for the transport of water in root is through

A plant cell becomes turgid due to