Showing posts with label #Structural Organisation in Animals Class XI. Show all posts
Showing posts with label #Structural Organisation in Animals Class XI. Show all posts

Monday, March 25, 2024

7. Structural Organisation in Animals Class XI

1 Which type of tissue forms the inner of a blood vessel?

a) Epithelial

b) Connective

c) Muscle

d) Nervous

Answer

Ans.(a)


2 In which of the following, the plasma membrane of the epithelial lining is Modified in to microvilli?

a) Tubules of the testis

b) Vagina

c) Intestine

d) Urinary tract

Answer

Ans.(c)


3 The actively dividing layer of columnar cells in the epidermis of man is called as the

a) Stratum granulosum

b) Stratum lucidum

c) Stratum Malpighi

d) Stratum corneum

Answer

Ans.(c)


4 The outermost layer of skin called stratum corneum is composed of

a) Completely dead and keratinised cells

b) Living and most actively dividing cells

c) Most of dead keratinized cells but some living cells

d) Living keratinized cells

Answer

Ans.(a)


5 Which type of tissue forms glands?

a) Epithelial

b) Connective

c) Nervous

d) Muscle

Answer

Ans.(a)


6 Mostly the mammary glands are modified

a) Sebaceous glands

b) Apocrine glands

c) Cutaneous glands

d) Holocrine glands

Answer

Ans.(b)


7 Ligaments are made up of

a) White fibres and some yellow elastic fibres

b) White fibres only

c) Yellow fibres only

d) Yellow fibres and muscle fibres

Answer

Ans.(a)


8 The bone of a mammal contains Haversian canals, which are connected by transverse canals known as

a) Semicircular canals

b) Inguinal canals

c) Volkmann’ canal

d) Bidder’ canal

Answer

Ans.(c)


9 Cardiac muscle is made up of branched fibres that are

a) Non-striated and under voluntary control

b) Striated and not under voluntary control

c) Non-striated and not under voluntary control

d) Striated and under voluntary control

Answer

Ans.(b)


10 The efferent process of neuron is known as

a) Dendron

b) Axon

c) Cyton

d) dendrite

Answer

Ans.(b)


11 Schwann cells and nodes of Ranvier are found in

a) neurons

b) chondroblasts

c) osteoblasts

d) gland cells

Answer

Ans.(a)


12 The plasma protein, which maintains the osmotic pressure of blood is

a) albumin

b) globulin

c) fibrinogen

d) prothrombin

Answer

Ans.(a)


13 A bipolar neuron has

a) 1 dendron and 1 axon

b) 2 axons and 2 dendrites

c) 2 dendrites and 1 axon

d) 2 axons and 1 dendrite

Answer

Ans.(a)


14 Mast cells of connective tissue contain

a) Heparin and calcitonin

b) Serotonin and melanin

c) Vasopressin and relaxin

d) Heparin and histamine

Answer

Ans.(d)


15 Metamerism is characteristic feature of phylum

a) Porifera

b) Platyhelminthes

c) Annelida

d) Mollusca

Answer

Ans.(c)


16 Blood is red but but there are no red blood cells in

a) earthworm and leeches

b) leeches

c) cockroach

d) bedbug

Answer

Ans.(a)


17 Which of the following statements is true for pheretima?

a) it is a dioecious animal with distinct sexual dimorphism

b) in it copulation occurs in night in burrow during rainy season

c) it can copulate throughout the year whenever it rains

d) it cannot travel both backwards and forwards

Answer

Ans.(b)


18 In earthworm, setae are absent from

a) clitellum, first and last segments

b) clitellum

c) first segment

d) clitellum and last segment

Answer

Ans.(a)


19 Abdomen of cockroach has segments

a) 6

b) 10

c) 11

d) 12

Answer

Ans.(b)


20 First wing in cockroach is a hard leathery structure and is called

a) Elytron attached to prothorax

b) Tegmina attached to prothorax

c) Elytron attached to mesothorax

d) Tegmina attached to mesothorax

Answer

Ans.(d)


21 Which of the 2 parts in cockroach are fundamentally similar in structure?

a) Anal styles and labrum

b) Maxillae and legs

c) Mandibles and antennae

d) Wings and cerci

Answer

Ans.(b)


22 In cockroach lower lip or labium refers to

a) Mentum

b) Submentum

c) First maxilla

d) Second maxilla

Answer

Ans.(d)


23 Number of Malpighian tubules present in cockroach is

a) 60-70

b) 80-90

c) 100-150

d) 200-250

Answer

Ans.(c)


24 Three chambered heart of frog is not as proficient as four chambered human heart because

a) Ventricle does not pump blood properly

b) It does not hold enough blood

c) Heart muscles are not strong

d) Oxygenated and deoxygenated bloods mix up

Answer

Ans.(d)


25 Chloragogen cells of pheretima are specialized for

a) Nutrition

b) Reproduction

c) Excretion

d) Respiration

Answer

Ans.(c)


26 Mating in earthworm occurs during

a) Night in rainy season

b) Night in water

c) Night in summer season

d) Day in rainy season

Answer

Ans.(a)


27 Structure present in man but absent in frog is

a) Salivary glands

b) Pancreas

c) Adrenal glands

d) Gall bladder

Answer

Ans.(a)


28 The glands present in skin of frog are

a) Mucous and poisonous

b) Sweat and mammary

c) Sweat and sebaceous

d) Sweat and mucous

Answer

Ans.(a)


29 In frog, jelly around the eggs is deposited

a) In water after fertilization

b) In water during fertilization

c) In the oviduct

d) In the ovary

Answer

Ans.(c)


30 The heart in cockroach is longitudinal beaded and there are

a) 2 chambers in thorax and 11 in abdomen

b) 3 chambers in thorax and 10 in abdomen

c) 2 chambers in thorax and 10 in abdomen

d) 3 chambers in thorax and 9 in abdomen

Answer

Ans.(b)


31 The blood of cockroach is colorless because

a) There is no respiratory pigment

b) Circulatory system is open type

c) Circulatory system is closed type

d) There are no salts in blood

Answer

Ans.(a)


32 Cockroach blood does not contain respiratory pigments, it means that

a) Cockroach does not respire

b) Cockroach respire anaerobically

c) Oxygen reaches tissue through tracheoles

d) Oxygen passes to all the tissues through diffusion

Answer

Ans.(c)


33 How many pairs of spiracles are found in cockroach

a) 3 pairs in thorax and 10 pairs in abdomen

b) 2pairs in thorax and 8 pairs in abdomen

c) 2 pairs in thorax and 6 pairs in abdomen

d) 1 pair in thorax and 7 pairs in abdomen

Answer

Ans.(b)


34 Earthworms are called ‘friends of farmers’ because

a) Their burrows make the soil loose

b) They are used as fish meal

c) They kill the birds due to biomagnification of chlorinated hydrocarbons

d) They make the soil porous, leave their castings and organic debris in the soil

Answer

Ans.(d)


35 Movement of coelomic fluid helps in locomotion of

a) Hydra

b) Frog

c) Starfish

d) earthworm

Answer

Ans.(d)


36 In earthworm, septa are absent in

a) first 4 segments

b) 5/6,10/11

c) 5/6,7/8

d) 6/7,7/8

Answer

Ans.(a)


37 In earthworm oxygen carrying haemoglobin occurs in

a) Plasma

b) Corpuscles

c) Both corpuscles and plasma

d) The statement is wrong

Answer

Ans.(a)


38 The region of earthworm, which is forest of nephridia

a) Clitellar region

b) Pharyngeal region

c) Typhlosolar region

d) Intestinal region

Answer

Ans.(a)


39 Which one of the following is an oxygen carrying blood pigment of earthworm?

a) Haemocyanin

b) Haemoglobin

c) Haemoerythrin

d) chlorocruorin

Answer

Ans.(b)


40 In frog, two phalenges occur in

a) pollex

b) hallux

c) third finger

d) third toe

Answer

Ans.(b)


41 Chloragogen cells are

a) respiratory only

b) circulatory only

c) excretory only

d) polyfunctional

Answer

Ans.(d)


42 Which is characteristic of common cockroach species?

a) 13-chambered heart

b) Reduced wings

c) Cocoon formation

d) Segmented body

Answer

Ans.(a)


43 Malpighian tubules of cockroach are found at the junction of

a) Crop and proventriculous

b) Stomodaeum and proctodaeum

c) Mesenteron and proctodaeum

d) Proctodaeum and stomodaeum

Answer

Ans.(c)


44 Collateral glands of cockroach help in

a) Formation of ootheca

b) Formation of oothecal chamber

c) Copulation

d) fertilization

Answer

Ans.(a)


45 Blood glands of pheretima occur in segments

a) 1,2 and 3

b) 3,4 and 5

c) 4,5 and 6

d) 10,11 and 12

Answer

Ans.(c)


46 Pharyngeal nephridia of earthworm occur in segments

a) 3,4 and 5

b) 4,5 and 6

c) 5,6 and 7

d) 6,1 and 8

Answer

Ans.(b)


47 Open circulatory system is not of physiological hindrance in cockroach because

a) Heart is simple but chambered

b) Blood is colorless

c) Excretion occurs through Malpighian tubules

d) Circulatory and respiratory systems are not connected

Answer

Ans.(d)


48 Number of eggs contained in an ootheca of cockroach is

a) 8

b) 16

c) 32

d) 4

Answer

Ans.(b)


49 Pericardial space in cockroach is regularly altered by muscles

a) Ciliary

b) Alary

c) Circular

d) longitudinal

Answer

Ans.(b)


50 What type of metamorphosis occurs in cockroach?

a) Holometabolous

b) Hemimetabolous

c) Paurometabolous

d) Ametabolous

Answer

Ans.(c)


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