CBSE 11TH BIOLOGY - Online Test
Q1. The centrioles are absent in
Answer : Option B
Explaination / Solution:
Animal cells have centrioles which are absent in almost all plant cells.
Q2. Chloroplast stroma contains
Answer : Option D
Explaination / Solution:
Chloroplast contains stroma and grana. Stroma are involved in light independent reaction enzymes for synthesis of glucose molecules using proudcut of light reaction.
Q3. Loud snoring and labored breathing are symptoms of :
Answer : Option B
Explaination / Solution:
Loud snoring and labored breathing are the symptoms of obstructive sleep apnea. Obstructive sleep apnea is a sleep disorder in which breathing is briefly and repeatedly interrupted.
Q4. Glucose will be lost in the urine of patients suffering from :
Answer : Option C
Explaination / Solution:
Glucose will be lost in the urine of patients suffering from diabetes mellitus. It a chronic lifelong condition that affects our body ability to use the energy found in blood.
Q5. Which among the following is monoecious?
Answer : Option D
Explaination / Solution:
Earthworms and leeches are monoecious,contain both male and female reproductive organs in same individual.
Q6. The nucleic acids that behave like enzymes are called as
Answer : Option C
Explaination / Solution:
Almost all enzymes are proteins. There are some nucleic acids that behave like enzymes. These are called ribozymes.
Q7. Sarla is on protein-deficient diet. As a result her plasma proteins content is reduced. She may develop symptom like :
Answer : Option B
Explaination / Solution:
Consuming protein deficient diet for longer duration may results into reduction in protein plasma reduction. The symptoms that appear on body includes swelling of hands and feet.
Q8. Two Synonyms are
Answer : Option C
Explaination / Solution:
Tricarboxylic acid cycle and citric acid cycle are two synonyms as both represent same cycle occurring during respiration process.
Q9. Diplotene stage can lasts for months or years. Dinoflagellates possess condensed chromosomes even in interphase, their nucleus is called
Answer : Option B
Explaination / Solution:
In oocytes of some vertebrates, diplotene can last for months or years.Such nucleus showing arrested diplotene stage is called mesokaryotic nucleus.
Q10. Match the kidney disorders and its symptoms :
column A
a) Ketosis
b) Polydipsia
c) Alkaptonuria
d) Haematuria
column B
i) frequent thirst
ii) blood in urine
iii) acetoacetic acid in urine
iv) homogentisic acid in urine
column A
a) Ketosis
b) Polydipsia
c) Alkaptonuria
d) Haematuria
column B
i) frequent thirst
ii) blood in urine
iii) acetoacetic acid in urine
iv) homogentisic acid in urine
Answer : Option C
Explaination / Solution:
Ketosis is the presence of actoacetic acid in urine, polydipsia is the condition of frequent thrist, alkaptonuria is the presence of homogentisic acid in urine and haematuria is the presence of blood in urine.
