Biology - Online Test
Q1. Soma clones are obtained by
Answer : Option B
Explaination / Solution:
Genetic engineering is the technique of manipulating the genome of an organism.
The plants produced through genetic engineering technique that are genetically identical to the original plant from which they are produced are called soma clones.
Q2. NWCP stands for
Answer : Option B
Explaination / Solution:
< The Government of India has been implementing the National Wetlands Conservation Programme (NWCP) in close collaboration with the State/UT Governments since the year 1985-86. Under the programme, 115 wetlands have been identified till now by the Ministry which require urgent conservation and management interventions.
The objective of this programme is the conservation of wetlands in the country so as to prevent their further degradation and ensuring their wise use for the benefit of local communities and overall conservation of biodiversity
Q3. An egg laying animal grouped under mammals is
Answer : Option A
Explaination / Solution:
Most of the animals belonging to class mammalia are viviparous, produces young ones. But, Duck-billed platypus belongs to mammalian class but lay eggs.
Q4. The alternation of two different phases of the life cycle involving haploid and diploid stage is called
Answer : Option C
Explaination / Solution:
Alternation of generation is the cyclic change in organisms involving haploid and diploid stages. Meiotic division results into haploid stage and fusion of haploid gametes results into diploid stage.
Q5. Which one is unpaired gland in male reproductive system
Answer : Option D
Explaination / Solution:
Only one Prostate gland is present in male reproductive gland. They release fluid medium in which sperms can move and also provide nutrition to sperms.
Q6. Most abundant mineral in body fluids are
Answer : Option C
Explaination / Solution:
Most abundant mineral in body fluids are and ions. These ions are responsible for generation of impulses and its transfer through neuron cells.
Q7. In Mirabilis jalapa when two F1 pink flowered plants were crossed with each other, the F2 generation produced 40 red, 80 pink and 40 white flowering plants. This a case of
Answer : Option D
Explaination / Solution:
F1pink flowered plants are heterozygous. When selfing is done the genotype and phenotype develops as 1:2:1 as 40 red, 80 pink and 40 white flowering plants.
Q8. During cellular respiration, pyruvic acid is reduced to lactic acid in the presence of
Answer : Option C
Explaination / Solution:
Lactate dehydrogenase: (LDH) An enzyme that catalyzes the conversion of lactate to pyruvate When oxygen is inadequate for cellular respiration.
This is an important step in energy production in cells. Many different types of cells in the body contain this enzyme. Some of the organs relatively rich in LDH are the heart, kidney, liver, and muscle.
Q9. Which of the following represent examples of extracellular fluids?
Answer : Option B
Explaination / Solution:
Tissue fluid( lymph) and blood plasma represents the extracellular fluids. Lymph flows in lymphatic vessels and plasma in arteries and veins along with RBC, WBC and platelets.
Q10. Which of the followings is mainly produced by the activity of anaerobic bacteria on sewage?
Answer : Option D
Explaination / Solution:
Anaerobic bacteria are used in water treatment process during which marsh gas is produced. This gas have pungent smell and highly flammable.
