CBSE 11TH BIOLOGY - Online Test
Q1. Measurement and the comparison of total growth per unit time is called
Answer : Option A
Explaination / Solution:
Absolute growth rate refers to the measurement and comparison of total growth per unit time.
Thus, Absolute growth = Growth in given time period.
Relative growth rate refers to the growth of a particular system per unit time, expressed on a common basis
Q2. International Code of Biological Nomenclature is applied to
Answer : Option A
Explaination / Solution:
Since biology deals with both plants and animals, the international code of biological nomenclature is applied to both plants and animals. Hence, the correct option is Both (2) and (3).
Q3. A meromyosin molecule doesn’t contain :
Answer : Option B
Explaination / Solution:
Each meromyosin has two important parts, a globular head with a short arm and a tail.
Q4. Select the correct equation from the following
Answer : Option C
Explaination / Solution:
Diffusion pressure deficit is equal to osmotic pressure minus water potential. Higher the DPD more faster osmosis will occur.(DPD = OP – WP).
Q5. The epithelium found in proximal convoluted tubule (PCT) of nephron in the kidney is
Answer : Option A
Explaination / Solution:
The cuboidal epithelium is composed of a single layer of cube-like cells found in ducts of glands and tubular parts of nephrons in kidneys and its main functions are secretion and absorption.
Q6. Who divided animals into two group based on the presence and absence of red blood cells?
Answer : Option D
Explaination / Solution:
Aristotle used simple morphological characters to classify plants into trees, shrubs and herbs. He also divided animals into two groups, those which had red blood and those that did not.
Q7.
Match the following :
| Hormone | Nature |
| a) Parathormone | i) Polypeptide |
| b) Oxytocin | ii) Amino acid Derivative |
| c) Sex hormone | iii) Peptide |
| d) Norepinephrine | iv) Steroid |
Answer : Option C
Explaination / Solution:
Parathormoneis a polypeptide hormone. Oxytocin is peptide hormone. Sex hormone is a steroid hormone and Norepinephrine is a amino acid derivative.
Q8. The cupric ions are essential for
Answer : Option C
Explaination / Solution:
Copper is absorbed as cupric ions (Cu2+).
It activates some enzymes in plants which are involved in lignin synthesis and it is essential in several enzyme systems. It is also required in the process of photosynthesis, is essential in plant respiration and assists in plant metabolism of carbohydrates and proteins.
Q9. _____ from pharynx is conveyed into oesophagus by _____ .
Answer : Option A
Explaination / Solution:
The bolus is then conveyed into the pharynx and then into the oesophagus by swallowing or deglutition.
Q10. Complete the following hierarchical chart showing parts of nervous system :
Answer : Option B
Explaination / Solution:
Human nervous system consists of central nervous system and peripheral nervous system. Peripheral nervous system includes 12 pairs of cranial nerves emerging from brain and 31 pairs of spinal nerves arising from spinal nerve.
