Zoology - Online Test
Q1. Read the following statements about gestational diabetes :
i. It must be controlled to protect baby’s growth and development.
ii. It puts women at risk for developing Type – 1 diabetes.
i. It must be controlled to protect baby’s growth and development.
ii. It puts women at risk for developing Type – 1 diabetes.
Answer : Option A
Explaination / Solution:
Gestational diabetes develops during pregnancy. It must be controlled to protect baby’s growth and development. This kind of diabetes never leads to develop type-1 diabetes.
Q2. Which among the following is called Portuguese man-of-war?
Answer : Option B
Explaination / Solution:
The Portuguese man-of-war is a siphonophore, an animal that is made up of a colony of organisms working together.Physalia is called Portuguese man-of-war. It is also called as blue bottle or floating terrror it is found floating on water surface. " The name comes from the uppermost polyp, a gas filled bladder, or pneumatophore, which sits above the water and somewhat looks like an old warship at full sail. They are also, known as bluebottles for the purple-blue color of their pneumatophores" (A Portuguese man of war). The tentacles can extend to 165 feet, although, the average length is 30 feet (Portuguese Man-of War Physalia physalis).
Q3. A mature ovarian follicle is called
Answer : Option C
Explaination / Solution:
A mature ovarian follicle is called Graafian follicle which consists of antrum and follicular cells.
Q4. 98% of living body is formed of six elements- C, H,N,O and
Answer : Option C
Explaination / Solution:
Everything in universe is made up of elements. The body of living organisms contain mainly six elements. These are carbon, hydrogen, oxygen phosphorous and Sulphur. In facts, 98% of living body is formed on these six elements.
Q5. The term antibiotic was coined by
Answer : Option A
Explaination / Solution:
The term antibiotic was coined by Selman Abraham Waksman. He developed antibiotic Streptomycin that cure tuberculosis. He got noble prize in medicine in 1952.
Q6. Each cardiac cycle takes 0.8 seconds to occur. Calculate how many cardiac cycles occur in 4 minutes ?
Answer : Option C
Explaination / Solution:
4 min = 240 sec. Therefore, 240/0.8 = 300 cardiac cycles.
Q7. The biological amplification of DDT in the various trophic levels is known as
Answer : Option A
Explaination / Solution:
Biomagnification, also known as bioamplification or biological magnification, is the increasing concentration of a substance, such as a toxic chemical, in the tissues of organisms at successively higher levels in a food chain.
The biological amplification of DDT in the various trophic levels is known as biomagnifications.
Q8. During zygotene stage chromosomes start pairing together and the process is called as
Answer : Option B
Explaination / Solution:
During zygotene stage, the homologous chromosomes start pairing together and this process of association is called synapsis. The paired homologous chromosomes are called bivalents.
Q9. The smallest bands in the agarose gel will be towards
Answer : Option D
Explaination / Solution:
Gel electrophoresis technique involves separation of different segments of DNA according to their size. The smallest bands in the agarose gel will be towards positively charged anode.
Q10. Vasopressin is a hormone involved in regulation of urine formation. It is secreted from :
Answer : Option B
Explaination / Solution:
An excessive loss of fluid from the body can activate receptors which stimulate the hypothalamus to release antidiuretic hormone (ADH) or vasopressin from the neurohypophysis.
