Biology - Online Test
Q1. A film of _____ lines lung alveoli that lowers _____ of the alveoli and makes breathing _____ :
Answer : Option D
Explaination / Solution:
A thin film of lecithin lines lung alveoli that lowers surface tension of the alveoli and makes breathing easier. The lining also reduces the friction of alveoli to avoid its damage.
Q2. The capacity to generate a whole plant from any cell or ex-plant is called
Answer : Option C
Explaination / Solution:
The capacity to generate a whole plant form any cell or ex-plant is called totipotency. Plants are totipotent and from small part of plant new whole plant can be grown.
Q3. World wetland day:
a) Is celebrated every year on 2nd January.
b) In 2014, Indian ministry organised it’s celebrations at the chilka lake.
a) Is celebrated every year on 2nd January.
b) In 2014, Indian ministry organised it’s celebrations at the chilka lake.
Answer : Option C
Explaination / Solution:
World Wetlands Day is celebrated every year on 2 February. This day marks the date of the adoption of the Convention on Wetlands on 2 February 1971, in the Iranian city of Ramsar on the shores of the Caspian Sea.
In 2014, Indian ministry organised it’s celebrations at the chilka lake.
Q4. The correct matched pair out of the following is :
Answer : Option C
Explaination / Solution:
Glucagon hormone released from pancreas increase the sugar level in blood in case deficiency of glucose. Parathyroid hormone is not hypocalcemin and TSH is not a neurohormone.
Q5. Which phylum shows this type of germinal layers shown below?
Answer : Option D
Explaination / Solution:
The germinal layer shows diploblastic. Phylum Coelenterata shows this type of germinal layers.
Q6. Sperms are of
Answer : Option B
Explaination / Solution:
Half of the sperm contain X-sex chromosome and remaining half contain Y-sex chromosome. Hence two kinds of sperms are formed by human male.
Q7. Nucleic acids are serve as
Answer : Option D
Explaination / Solution:
Nucleic acids carry hereditary information and are passed on from parental generation to progeny.
Q8. XO type of sex determination is found in
Answer : Option C
Explaination / Solution:
In grasshopper, sex determination is of XO type, in which the males have only one X-chromosome besides the autosomes whereas females have a pair of X-chromosome.
Q9. What is the common name of Drosophila melanogaster?
Answer : Option D
Explaination / Solution:
Drosophila melanogaster is a species of fly (the taxonomic order Diptera) in the family Drosophilidae. The species is known generally as the common fruit fly or vinegar fly. A number of experiments related to inheritance of trait were carried out on this small fly.
Q10. Match the following:
column A
a)Waller
b) Landsteiner
c) de castello and Steini
d) Landsteiner and Weiner
column B
i) rhesus antigen
ii) first ECG
iii) A, B and O blood group
iv) AB blood group
column A
a)Waller
b) Landsteiner
c) de castello and Steini
d) Landsteiner and Weiner
column B
i) rhesus antigen
ii) first ECG
iii) A, B and O blood group
iv) AB blood group
Answer : Option C
Explaination / Solution:
Waller performed first ECG. Landsteiner and Weiner discovered rhesus antigen (Rh). De castello and Steini shows the AB blood grouping and Landsteiner A,B,O blood grouping.
