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NEET BIOLOGY > Structural Organization > Flashcards

Structural Organization Flashcards

1
Q

Statement 1: Bright yellow, red and green coloured cockroaches have also been reported in temperate regions.

A

False
Tropical regions

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2
Q

Their size ranges from………….. inches

A

¼ inches to 3 inches (0.6-7.6 cm)

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3
Q

Periplaneta americana size is………. In mm

A

34 to 53mm

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4
Q

Head is formed by the fusion of……..segments and shows great mobility in all directions due to flexible……..

A

six

neck

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5
Q

The head capsule bears a pair of…………

A

compound eyes

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6
Q

Statement 1: In females, the 8th sternum is boat shaped and together with the 8th and 9th sterna forms a brood or genital pouch
Statement 2: Posterior part of brood pouch contains female gonopore, spermathecal pores and collateral glands

A

Both statements are incorrect
7th sternum
Anterior part

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7
Q

Statement 1: In males, genital pouch or chamber is bounded dorsally by 9th and 10th terga and ventrally by the 9th sternum
Statement 2: It contains ventral anus, ventral male genital pore and gonapophysis.

A

Statement 1 is correct but statement 2 is incorrect
It contains dorsal Anu’s………..

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8
Q

Statement 1: A ring of 6-8 blind tubules called hepatic or gastric caeca is present at the junction of midgut and hindgut , which secrete digestive juice
Statement 2: At the junction of midgut and hindgut is present another ring of 100-120 yellow coloured thin filamentous Malpighian tubules.

A

Both statements are false
Statement 1: at junction of foregut and midgut
Statement 2: 100 to 150

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9
Q

The hindgut is [narrow/broader] than midgut and is differentiated into ileum, colon and rectum.

A

broader

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10
Q

The respiratory system consists of a network of trachea, that open through……… pairs of small holes called spiracles present on the lateral side of the body.

A

10

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11
Q

In addition, the fat body, nephrocytes and urecose glands also help in…………

A

excretion

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12
Q

compound eyes are situated at the [dorsal/ventral] surface of the head

A

dorsal

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13
Q

Each eye consists of about……..hexagonal ommatidia

A

2000

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14
Q

Male reproductive system consists of a pair of testes one lying on each lateral side in the…….abdominal segments.

A

4th -6th

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15
Q

A characteristic mushroom-shaped gland is present in the……. abdominal segments which functions as an accessory reproductive gland

A

6th-7th

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16
Q

Statement 1: The external genitalia are represented by male gonapophysis or phallomere
Statement 2: These are chitinous symmetrical structures, surrounding the male gonopore

A

Statement 1 is correct and 2 is incorrect
These are asymmetrical

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17
Q

Statement 1: The female reproductive sysytem consists of two large ovaries, lying laterally in the 2nd – 6th abdominal segments.
Statement 2: Each ovary is formed of a group of eight ovarian tubules or ovarioles, containing a chain of developing ova

A

Both statements are correct

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18
Q

A pair of spermatheca is present in the……..segment which opens into the genital chamber.

A

6th

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19
Q

Ootheca is a dark reddish to blackish brown capsule, about…….. long.

A

3/8” (8 mm)

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20
Q

On an average, females produce………… oothecae, each containing…………. eggs arranged into …….. rows

A

9-10

14-16

2

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21
Q

Statement 1: The colour of dorsal side of body is generally olive green with dark irregular spots.
Statement 2: On the ventral side the skin is uniformly pale yellow.

A

Both statements are correct

22
Q

The frog never drinks water but absorb it through the skin.

A

True

23
Q

Statement 1: The hind limbs end in five digits and they are larger and muscular than fore limb
Statement 2: fore limbs end in four digits

A

Both statements are correct

24
Q

copulatory pad on the first digit of the hind limbs

A

False
Fore limbs

25
Q

Assertion: The alimentary canal is short
Reason :frogs are carnivores and hence the length of intestine is reduced

A

Both are correct and R is correct explanation of A

26
Q

Partially digested food called…….is passed from stomach to the first part of the small intestine

A

chyme

27
Q

During aestivation and hibernation gaseous exchange takes place through……..

A

skin

28
Q

Statement 1: A oval structure called sinus venosus joins the left atrium atrium.
Statement 2: It receives blood through the major veins called vena cava.

A

Statement 1 is incorrect and 2 is correct
It is triangular structure which is present dorsal to right atrium and joins right atrium

29
Q

The ventricle opens into a sac-like…………on the……….side of the heart.

A

conus arteriosus

ventral

30
Q

Statement 1: Special venous connection between liver and intestine as well as the kidney and upper parts of the body are present in frogs.
Statement 2: The former is called hepatic portal system and the latter is called renal portal system.

A

Statement 1 is incorrect and 2 is correct
Kidney and lower parts of body are involved

31
Q

These are compact, dark red and bean like structures situated a little posteriorly in the body cavity on both sides of vertebral column.
Who am I?

A

Kidneys

32
Q

The ureters act as urinogenital duct which opens into the cloaca in…….

A

Males

33
Q

The frog excretes…….and thus is an………..animal.

A

urea

ureotelic

34
Q

Assertion: The system for control and coordination is highly evolved in the frog.
Reason: It includes both neural system and endocrine glands

A

Both are correct and R is correct explanation for A

35
Q

There are…….pairs of cranial nerves arising from the brain

A

ten

36
Q

Forebrain includes
Name 3 structures

A

olfactory lobes

paired cerebral hemispheres

unpaired diencephalon.

37
Q

midbrain is characterised by a pair of……….

A

optic lobes

38
Q

Hind-brain consists of
Name 2 parts

A

cerebellum

medulla oblongata.

39
Q

Frog has different types of sense organs, namely

A

organs of touch (sensory papillae)

taste (taste buds)

smell (nasal epithelium)

vision (eyes)

hearing (tympanum with internal ears).

40
Q

……. & ……….. are well-organised sense structures and the rest are cellular aggregations around nerve endings

A

eyes
internal ears

41
Q

Males have pair of yellowish…….. testes which are found adhered to the upper part of kidneys by a double fold of peritoneum called………..

A

Ovoid

mesorchium

42
Q

Vasa efferentia are…….in number that arise from testes.

A

10-12

43
Q

A mature female can lay……. To…….. ova at a time

A

2500 to 3000

44
Q

Muscular tongue is present, which is……..at the tip and is used in capturing the prey

A

bilobed

45
Q

Statement 1: Fertilisation is external and takes place in water
Statement 2: The eggs hatch into tadpoles, which metamorphose into frogs.

A

Both are correct

46
Q

Mast cells secrete 3 different hormones name them and their function

A

Heparin: anticoagulant
Serotonin: vasoconstriction
Histamine: vasodilation

47
Q

Difference between collagen and elastin fibres

A

Collagen:
white colour
Present in bundles
Unbranched
Provide strength

Elastin:
Yellow colour
Present individually
Branched
Provide elasticity

48
Q

Tendons consist of……… fibres only

A

Collagen

49
Q

Covering of cartilage is called……

A

Perichondrium

50
Q

Define MEROCRINE & APOCRINE GLANDS

A

Merocrine glands release their secretions directly onto the surface of the skin through exocytosis without losing any cellular material. These include eccrine sweat glands found throughout most of the body, responsible for regulating body temperature.

Apocrine glands, on the other hand, release their secretions by pinching off a portion of the cell, which can include cellular debris. These glands are primarily located in areas like the armpits and groin, becoming active during puberty and are associated with scent production.

NEET BIOLOGY (16 decks)

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