In this post, we will provide the 11th zoology book back one mark questions with answers by Mr P. Nantish Kumar. For the convenience of the students, we have divided the answers to multiple-choice questions into several lessons. We also include a sample free PDF download link of the Higher secondary first-year BIO-ZOOLOGY book back one marks questions with answers after this post, allowing students to gain a deeper understanding of this topic.
11th zoology book back one mark questions with answers
Lesson 1
Q.1. A living organism is differentiated from non-living structure based on ?
a. Reproduction
b. Growth
c. Metabolism
d. Movement
Answer : d. Movement
Q.2. A group of organisms having similar traits of a rank is ?
a. Species
b. Taxon
c. Genus
d. Family
Answer : b. Taxon
Q.3. Every unit of classification regardless of its rank is ?
a. Taxon
b. Variety
c. Species
d. Strain
Answer : a. Taxon
Q.4. Which of the following is not present in same rank?
a. Primata
b. Orthoptera
c. Diptera
d. Insecta
Answer : a. Primata
Q.5. who coined the term biodiversity ?
a. Walter Rosen
b. AG Tansley
c. Aristotle
d. AP de Candole
Answer: a. Walter Rosen
Lesson 2
Q.6. The symmetry exhibited in cnidarians is ?
a. Radial
b. Bilateral
c. Pentamerous radial
d. Asymmetrical
Answer : a. Radial
Q.7. Sea anemone belongs to phylum ?
a. Protozoa
b. Porifera
c. Coelenterata
d. Echinodermata
Answer : c. Coelenterata
Q.8. The excretory cells that are found inplatyhelminthes are ?
a. Protonephridia
b. Flame cells
c. Solenocytes
d. All of these
Answer : b. Flame cells
Q.9. In which of the following organisms, self fertilization is seen ?
a. Fish
b. Round worm
c. Earthworm
d. Liver fluke
Answer : c. Earthworm
Q.10. Nephridia of Earthworms are performing the same functions as ?
a. Gills of prawn
b. Flame cells of Planaria
c. Trachea of insects
d. Nematoblasts of Hydra
Answer : b. Flame cells of Planaria
Lesson 3
Q.11. The main function of the cuboidal epithelium is ?
a. Protection
b. Secretion
c. Absorption
d. Both (b) and (c)
Answer : d. Both (b) and (c)
Q.12. The ciliated epithelium lines the
a. Skin
b. Digestive tract
c. Gall bladder
d. Trachea
Answer : d. Trachea
Q.13. What type of fibres are found in connective tissue matrix?
a. Collagen
b. Areolar
c. Cartilage
d. Tubular
Answer : a. Collagen
Q.14. Prevention of substances from leaking across the tissue is provided by
a. Tight junction
b. Adhering junction
c. Gap junction
d. Elastic junction
Answer : a. Tight junction
Q.15. Non-shivering thermogenesis in neonates produces heat through
a. White fat
b. Brown fat
c. Yellow fat
d. Colourless fat
Answer : b. Brown fat
Lesson 4
Q.16. The clitellum is a distinct part in thebody of earthworm Lampito mauritii,it is found in?
a. Segments 13 – 14
b. Segments 14 – 17
c. Segments 12 – 13
d. Segments 14 – 16
Answer : b. Segments 14 – 17
Q.17. Sexually, earthworms are
a. Sexes are separate
b. Hermaphroditic but not self -fertilizing
c. Hermaphroditic and self – fertilizing
d. Parthenogenic
Answer : b. Hermaphroditic but not self -fertilizing
Q.18. The type of vision in Cockroach is
a. Three dimensional
b. Two dimensional
c. Mosaic
d. Cockroach do not have vision
Answer : c. Mosaic
Q.19. How many abdominal segments are present in male and female Cockroaches?
a. 10, 10
b. 9, 10
c. 8, 10
d. 9, 9
Answer : a. 10, 10
Q.20. Which of the following does not have an open circulatory system?
a. Frog
b. Earthworm
c. Pigeon
d. Cockroach
Answer : d. Cockroach
Lesson 5
Q.21. Choose the incorrect sentence from the following:
a. Bile juice emulsifies the fat.
b. Chyme is a digestive acidic food in stomach.
c. Pancreatic juice converts lipid into fatty acid and glycerol.
d. Enterokinase stimulates the secretio
Answer : d. Enterokinase stimulates the secretio
Q.22. What is chyme….?
a. The process of conversion of fat into small droplets.
b. The process of conversion of micelles substances of glycerol into fatty droplet.
c. The process of preparation of incompletely digested acidic food through gastric juice.
d. The process of preparation of completely digested liquid food in midgut.
Answer: c. The process of preparation of incompletely digested acidic food through gastric juice.
Q.23. Which of the following hormones stimulate the production of pancreaticjuice and bicarbonate?
a. Angiotensin and epinephrine
b. Gastrin and insulin
c. Cholecysokinin and secretin
d. Insulin and glucagon
Answer : c. Cholecysokinin and secretin
Q.24. The sphincter of Oddi guards
a. Hepatopancreatic duct
b. Common bile duct
c. Pancreatic duct
d. Cystic duct
Answer : a. Hepatopancreatic duct
Q.25. In small intestine, active absorption occurs in case of
a. Glucose
b. Amino acids
c. Na+
d. All the above
Answer : c. Na+
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