Biology - Online Test
Q1. In our society women are blamed for producing female children as the growth and development of child occurs inside the mother womb. This statement is
Answer : Option B
Explaination / Solution:
Women are not responsible for sex of child because they produce only one kind of gamete containing X-sex chromosome, on the other hand male produce two kinds of sperms half containing X and half Y sex chromosome.
Q2. Human insulin is being commercially produced from a transgenic species of
Answer : Option C
Explaination / Solution:
Human insulin is artificially prepared chemicals used by diabetic patients. This hormone is obtained from genetically engineered Escherichia bacterium that can reproduce rapidly.
Q3. In which conference held in 1997, the rich nations have agreed to limit the emission of green house gases.
Answer : Option C
Explaination / Solution:
The Kyoto Protocol was adopted in Kyoto, Japan, on 11 December 1997
The Kyoto Protocol is an international agreement linked to the United Nations Framework Convention on Climate Change, which commits its Parties by setting internationally binding emission reduction targets.
Recognizing that developed countries are principally responsible for the current high levels of GHG emissions in the atmosphere as a result of more than 150 years of industrial activity, the Protocol places a heavier burden on developed nations under the principle of "common but differentiated responsibilities."
Q4. The correct sequential order of pathway is
Answer : Option A
Explaination / Solution:
There is a sequential, orderly pathway functioning, with one substrate forming the next and with glycolysis, TCA cycle and ETS pathway following one after another.
Q5. In plant cells, the new cell wall begins by the
Answer : Option B
Explaination / Solution:
In plant cells, wall formation starts in the centre of the cell and grows outward to meet the existing lateral walls. The formation of the new cell wall begins with the formation of a simple precursor, called the cell plate which hardens to give rise to middle lamella.
Q6. EtBr is a mutagen as
Answer : Option A
Explaination / Solution:
EtBR or Ethidium Bromide is widely used nucleic acid stain and very strong mutagen and carcinogen. It causes mutation that cause variation or introduction of new traits.
Q7. The animals of cold countries have relatively shorter and poorly developed ear, eyes, hair and other phenotypic characters. This is known by which law?
Answer : Option B
Explaination / Solution:
Allen's rule. The principle holding that in a warm-blooded animal species having distinct geographic populations, the limbs, ears, and other appendages of the animals living in cold climates tend to be shorter than in animals of the same species living in warm climates.
The animals of cold countries have relatively shorter and poorly developed ear, eyes, hair and other phenotypic characters to avoid cold condition.
Q8. The branch of study that deals of identification, nomenclature and classification is called
Answer : Option B
Explaination / Solution:
Taxonomy is the branch of biological science that deals of identification, nomenclature and classification of organisms according to certain sets of rules.
Q9. Which type of vascular bundle is shown in figure below
Answer : Option C
Explaination / Solution:
The vascular bundle shown below is closed and conjoint as cambium is absent between xylem and phloem tissue.
Q10. If GA3 is applied to the rice seedlings, the plant will show
Answer : Option D
Explaination / Solution:
GA3 is a gibberellins that help in elongation of stem of the plant. If GA3 plant hormone is applied to the rice seedling the plant will show extra elongation of plant body.
