Biology - Online Test
Q1. Which of the following is correct:
Answer : Option C
Explaination / Solution:
Net primary productivity (NPP) is equal to Gross primary productivity (GPP) minus Respiration loss (R). NPP is the available biomass for the consumption of heterotrophs in the ecosystem.
Q2. The essential role of air in the growth of green plants is given by
Answer : Option A
Explaination / Solution:
Joseph Priestley (1733-1804) in 1770 performed a series of experiments that revealed the essential role of air in the growth of green plants.
Q3. Vital capacity of our lungs include all of the following except :
Answer : Option C
Explaination / Solution:
Vital capacity includes ERV, TV and IRV or the maximum volume of air a person can breathe out after a forced inspiration.
Q4. The superiority of the hybrid over either parent in one or more traits is
Answer : Option D
Explaination / Solution:
Heterosis, hybrid vigor, or outbreeding enhancement, is the improved or increased function of any biological quality in a hybrid offspring. The adjective derived from heterosis is heterotic
Hybrid obtained from two different plants have one or more traits superior than either of parents.
Q5. Biodiversity is most frequently quantified as
Answer : Option D
Explaination / Solution:
Biodiversity is the presence of diverse kinds of living organisms in a particular habitat. It is most frequently quantified as number of species in particular geographical region.
Q6. Choose the odd one out based on coelom: Annelids, Molluscs, Platyhelminthes, Arthopods
Answer : Option B
Explaination / Solution:
Animals possessing coelom are called coelomates such as annelids, molluscs, arthropods, echinoderms, hemichordates and chordates.In Platyhelmites coelom is absent.
Q7. In some plants anther and stigma mature at same time this condition is called
Answer : Option D
Explaination / Solution:
Homogamy – In this case the anther and stigmas of a bisexual flower mature simultaneously. The pollen grains reach the mature stigma either by contact, wind, gravity, rain drop or even insects. Self pollination brought about by contact is called direct autogamy and remaining agencies perform indirect autogamy.
Q8. Seminal plasma in human males is rich in
Answer : Option C
Explaination / Solution:
Seminal plasma along with sperms forms the semen. The seminal plasma provides nourishment to sperms and rich in fructose and calcium ions.
Q9. Monoterpene esters called pyrethoids found in flowers and leaves of chrysnthemumare used commercially for making
Answer : Option A
Explaination / Solution:
Monoterpene eaters called pyrethoids found in flowers and leaves of chrysnthemumare used commercially for making insecticides.
Q10. The pre-hypertension blood pressure value is a measurement between :
Answer : Option A
Explaination / Solution:
Hypertension or high blood pressure is the condition where blood pressure increases substantially. The pre-hypertension blood pressure value is between 120/80 and 139/89.
