CBSE Questions for Class 11 Medical Biology Structural Organisation In Animals Quiz 9 - MCQExams.com

The main function of clitellum is
  • Coccon formation
  • Locomotion
  • Excretion
  • Copulation
Earthworms possess hearts
  • 6 pairs
  • 4 pairs
  • 2 pairs
  • 1
Clitellum of Pheretima is thick girdle that is
  • Non-glandular around 14-16 segments
  • Glandular around 14-16 segments
  • Glandular around 16-18 segments
  • Non-glandular around 16-18 segments
Setae occur in earthworm in all segments except
  • Clitellar region
  • Anal segment
  • Peristomium
  • All of the above
Blood of Pheretima is
  • Blue with haemocyanin in corpuscles
  • Blue with haemocyanin in plasma
  • Red with haemoglobin in corpuscles
  • Red with haemoglobin in plasma
Photoreceptors of Earthworm occur on
  • Clitellum
  • Anal segment
  • Dorsal surface
  • Lateral sides
In Earthworm, arrangement of blood vessels is
  • Different in last fifteen segments
  • Different in first thirteen segments
  • Same throughout
  • Different in middle thirteen segments
Excretory organs of Earthworm are
  • Coelom
  • Flame cells
  • Nephridia
  • Gizzard
Which of the following is the characteristic of Cockroach?
  • 13-chambered heart
  • Reduced wings
  • Cocoon formation
  • Segmented body
Blood of Cockroach does not contain respiratory pigment. It means Cockroach 
  • Does not respire
  • Respires anaerobically
  • Oxygen goes to tissues by intracellular capillary system
  • Oxygen reaches tissues directly through diffusion
Dorsal vessel of earthworm is
  • Distributing
  • Collecting
  • Collecting in first thirteen segments and distributing in the rest
  • Distributing in first thirteen segments and collecting in the rest
Typhlosole found in Pheretima occurs in
  • Oesophagus
  • Stomach
  • Gizzard
  • Intestine
13-chambered tubular heart is found in
  • Cockroach
  • Earthworm
  • Frog
  • Rabbit
In Earthworm, the first effective organ for food digestion is
  • Pharynx
  • Buccal cavity
  • Mouth
  • Stomach
Chromophil cells present on pharynx of earth worm take part in secretion of
  • Mucus
  • Lipases
  • Carbohydrases
  • All the above
Spermathecal pores of Pheretima are present in
  • 5/6, 6/7, 7/8 and 8/9
  • 6/7, 7/8, 8/9 and 9/10
  • 1/2, 2/3, 3/4 and 4/5
  • 14/15, 15/16, 16/17 and 17/18
The component units of compound eye of Cockroach are called
  • Eyelets
  • Fenestrae
  • Ocelli
  • Ommatidia
Anal style is present in
  • Male Cockroach
  • Female Cockroach
  • Both the sexes
  • None of the two
Spiracles of Cockroach which are larger and always kept open are
  • First and second pairs
  • First and third pairs
  • First and tenth pairs
  • Second and third pairs
Movement of coelomic fluid helps in locomotion of
  • Hydra
  • Frog
  • Starfish
  • Earthworm
Enteronephric nephridia of earthworm are connected with
  • Excretion
  • Digestion
  • Osmoregulation
  • All of the above
Chloragogen cells in Pheretima are specialised for
  • Nutrition
  • Excretion
  • Reproduction
  • Respiration
Heart of Cockroach is 
  • 10 segmented
  • 12 segmented
  • 13 segmented
  • 15 segmented
Nephrostome occurs in earthworm
  • Septal nephridia
  • Integumentary nephridia
  • Pharyngeal and septal nephridia
  • Pharyngeal and integumentary nephridia
Chloragogen cells of Earthworm are similar to an organ of vertebrates
  • Liver
  • Lung
  • Kidney
  • Spleen
Colleterial gland is present in
  • Male Cockroach
  • Female Cockroach
  • Both the sexes
  • None of the two
In Earthworm, dorsal blood vessel is collecting channel
  • Behind 13th segment
  • Anterior 13 segment
  • Throughout
  • In typhlosolar region
Oxygen carrying earthworm is 
  • Haemocyanin
  • Haemoglobin
  • Haemoerythrin
  • Chlorocruorin
  • Pinnaglobin
Which one does not occur in Earthworm
  • Septal nephridia
  • Macronephridia
  • Integumentary nephridia
  • Pharyngeal nephridia
Nephridia of Pheretima are
  • Protonephridia
  • Solenocytes
  • Micrometanephridia
  • Meganephridia
Open vascular system is absent in
  • Housefly
  • Cockroach
  • Silver Fish
  • Earthworm
Locomotion occurs in earthworm with the help of:
  • Setae
  • Setae and circular muscles
  • Parapodia
  • Setae, circular muscles and longitudinal muscles
Number of lateral hearts in Pheretima are 
  • 8
  • 12
  • 16
  • 4
Blood glands of Pheretima take part in 
  • Formation of red blood corpuscles
  • Formation of phagocytes
  • Maintenance of blood volume
  • Maintenance of blood circulation
Number of chambers in heart of Cockroach is
  • 4
  • 10
  • 13
  • 15
Which is not correct for Earthworm
  • It walks with a speed of 25 cm/min
  • It can remain without oxygen for 630 hrs
  • Life span is 3.510 years
  • Setae easily dissolve in KOH
Ommatidia serve the purpose of photoperception in
  • Cockroach
  • Frog
  • Humans
  • Sunflower
Chloragogen cells functionally resemble
  • Collar cells
  • Plasma cells
  • Flame cells
  • Mesophyll cells
Number of segments in the anal cerci of Cockroach is
  • 12
  • 15
  • 18
  • 10
Enzyme found in saliva of cockroach is
  • Amylase
  • Cellulase
  • Protease
  • Both A & B
Statement (S): Respiratory system of Periplaneta is polyneustic type
Reason (R). In Periplaneta thoracic spiracles help in expiration and abdominal spiracles help in inspiration.
  • S is correct but R is wrong
  • S is wrong but R is correct
  • Both S and R are correct and R is correct explanation of S
  • Both S and R are correct and R is not correct explanation of S
In Cockroach, gizzard is part of
  • Respiratory system
  • Digestive system
  • Immune System
  • Circulatory system
The gland whose secretion facilitates attachment of two earthworms during copulation is located in segment
  • 14
  • 18
  • 19
  • 22
Type of feeding in Earthworm is
  • Fluid feeding
  • Filter feeding
  • Detritus feeding
  • Tentacle
Number of spiracles found in Cockroach are
  • 5 thoracic, 3 abdominal
  • 3 thoracic, 5 abdominal
  • 8 thoracic, 2 abdominal
  • 2 thoracic, 8 abdominal
Adhesive pads present in legs of Cockroach are
  • Galeae
  • Lacineae
  • Glossae
  • Plantulae
In Earthworm, dorsal wall of intestine from 26th segment to 95th segment forms a median internal fold called
  • Trochophore
  • Typhlosole
  • Clitellum
  • Trachea
  • Nephridium
Brown colour of earthworm is due to
  • Melanin
  • Porphyrin
  • Haemoglobin
  • Both A and B
In Earthworm, gizzard occurs in segment
  • 5
  • 6
  • 8
  • 10
In Cockroach which one is absorbed in hepatic caeca
  • Glucose and amino acids
  • Lipids
  • Glucose
  • Both B and C
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