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NEET • BIOLOGY • STRUCTURAL ORGANISATION IN ANIMALS

Structural organisation in animals practice · Mixed difficulty

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Showing 211-240 of 307 questions

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211 Medium

211 of 307

Remembering +4 | -1

In cartilage, the small cavities, lacunae are secreted by

View answer and explanation

Correct option: C

Chondrocytes

Option C (Chondrocytes) is correct because chondrocytes are the cells responsible for secreting and maintaining the matrix of cartilage, including the lacunae.

212 Hard

212 of 307

Understanding +4 | -1

Microvilli of intestinal epithelium are similar in function with

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Correct option: A

Typhlosole in earthworm

Option A (Typhlosole in earthworm) is correct because both microvilli and typhlosole increase the surface area for absorption in their respective organisms.

213 Hard

213 of 307

Remembering +4 | -1

Which one is not found in testis of frog?

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Correct option: D

Interstitial cell

Option D (Interstitial cell) is the correct answer because interstitial cells are located *between* the seminiferous tubules, not *in* the tubules themselves.

214 Easy

214 of 307

Remembering +4 | -1

The number of vasa efferentia that arises from testes in frog’s male reproductive system is

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Correct option: B

46001

Option C (13-16) is correct because the number of vasa efferentia arising from the testes in a frog's male reproductive system is typically between 10-12, but 13-16 is the closest correct range.

215 Medium

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Remembering +4 | -1

In frogs, oviduct is formed by

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Correct option: C

Mullerian duct

Option C (Mullerian duct) is correct because the oviduct in frogs is formed from the Mullerian duct.

216 Medium

216 of 307

Understanding +4 | -1

The function of the gap junction is to:

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Correct option: B

Facilitate communication between adjoining cells by connecting the cytoplasm for rapid transfer of ions, small Molecules and some large molecules

Option B (Facilitate communication between adjoining cells by connecting the cytoplasm for rapid transfer of ions, small Molecules and some large molecules) is correct because gap junctions allow direct communication between cells.

217 Medium

217 of 307

Analyzing +4 | -1

Read the following statements about animal tissues and choose the option which correctly states true
(T) of false (F)

A) Bone is the main tissues that provides a structural frame to the body

B) The intercellular material of cartilage is solid and non-pliable, which resists compressions

C) The ligament attaches skeletal muscles to bones

D) In all connective tissue without exception, the cells secret fibres of structural collages or elastin
proteins

View answer and explanation

Correct option: D

A - T, B - F, C - F, D - F

Option D (A - T, B - F, C - F, D - F) is correct because bone provides structural support, cartilage is pliable, ligaments attach bone to bone, and not all connective tissues secrete collagen or elastin.

218 Medium

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Remembering +4 | -1

Which of the following tissue exerts the greats control over the body’s responsiveness to changing conditions?

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Correct option: D

Neural tissue

Option D (Neural tissue) is correct because neural tissue, composed of neurons and glial cells, is specialized for rapid communication and control of the body's responses to changing conditions.

219 Medium

219 of 307

Remembering +4 | -1

The compound eyes of cockroaches consists of about

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Correct option: B

2000 hexagonal ommatidia

Option B (2000 hexagonal ommatidia) is correct because the compound eyes of cockroaches consist of approximately 2000 hexagonal ommatidia, which are the individual visual units.

220 Medium

220 of 307

Analyzing +4 | -1

Assertion (A) : In frogs, pancreatic juices digest proteins and carbohydrates in duodenum region of small intestine.

Reason (R) : Bile juice containing digestive enzymes reach duodenum through a common bile duct.

In the light of above statements, choose the correct option.

View answer and explanation

Correct option: C

(A) is true but (R) is false

Option C ((A) is true but (R) is false) is correct because pancreatic juices do digest proteins and carbohydrates, but bile juice does not contain digestive enzymes.

221 Easy

221 of 307

Remembering +4 | -1

The contractile tissue that is present only in the heart is

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Correct option: A

Cardiac tissue

Option A (Cardiac tissue) is correct because cardiac tissue is a specialized muscle tissue found only in the heart, responsible for its contractions.

222 Medium

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Analyzing +4 | -1

A: Thigh muscles can get tired but not the muscles of ventricle of heart.

R: Muscles of thigh are voluntary whereas that of heart are involuntary muscles.

View answer and explanation

Correct option: B

Both assertion and reason are true and reason is not the correct explanation of assertion

Option B is correct because both the assertion and reason are true, but the reason doesn't fully explain the assertion. Fatigue resistance is more related to muscle fiber type and metabolic processes.

223 Medium

223 of 307

Understanding +4 | -1

Select the correct statement w.r.t. Periplaneta americana.

View answer and explanation

Correct option: C

Hind-gut is broader than mid-gut

Option C (Hind-gut is broader than mid-gut) is correct because the hindgut in Periplaneta americana is indeed broader than the midgut.

224 Medium

224 of 307

Understanding +4 | -1

Consider the following 4 statements (i) – (iv) and select the correct option stating which ones are true and which ones are false.

i. Ligaments are rich in protein elastin.

ii. Tendons are a type of dense regular fibrous tissues.

iii. Oesophagus have keratinized squamous epithelium.

iv. Most abundant protein found in human body is collagen.

View answer and explanation

Correct option: C

i – T, ii – T, iii – F, iv – T

Option A (i – F, ii – T, iii – F, iv – T) is correct because ligaments are rich in elastin, tendons are dense regular fibrous tissues, the esophagus has non-keratinized squamous epithelium, and collagen is the most abundant protein.

225 Easy

225 of 307

Understanding +4 | -1

Statement I: The structure of a cell varies according to its function.

Statement II: Depending on structure and function, the animal tissues have been broadly classified into four general types.

View answer and explanation

Correct option: A

Statement I and Statement II both are correct

Option A (Statement I and Statement II both are correct) is correct because the structure of a cell does indeed vary according to its function, and animal tissues are broadly classified into four general types based on structure and function.

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226 Easy

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Understanding +4 | -1

Assertion: Extracellular materials are important for cells.
Reason: Intercellular materials surround the cells and bind
them together

View answer and explanation

Correct option: A

If both the assertion and the reason are true and the
reason is a correct explanation of the
assertion

Option A (If both the assertion and the reason are true and the reason is a correct explanation of the assertion) is correct because extracellular materials are important for cells because they surround and bind them together.

227 Easy

227 of 307

Understanding +4 | -1

Statement I: Neural tissue exerts the greatest control over the body's responsiveness to changing conditions.
Statement II: Neurons are excitable cells.

View answer and explanation

Correct option: A

Statement I and Statement II both are correct

Option A (Statement I and Statement II both are correct) is correct because neural tissue indeed exerts significant control over the body's responsiveness, and neurons are excitable cells.

228 Medium

228 of 307

Remembering +4 | -1

Urinary bladder is….. in frogs

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Correct option: D

Bilobed

Option D (Bilobed) is correct because the urinary bladder in frogs is bilobed, meaning it has two lobes.

229 Easy

229 of 307

Remembering +4 | -1

Heparin

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Correct option: D

Is anticoagulant

Option D (Is anticoagulant) is correct because heparin is a substance that prevents blood clotting.

230 Easy

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Remembering +4 | -1

The principal role of setae in earthworm is

View answer and explanation

Correct option: C

Locomotion

Option C (Locomotion) is correct because setae are bristle-like structures that help earthworms grip the soil and move.

231 Hard

231 of 307

Understanding +4 | -1

Choose the fabricated statement from the following.

View answer and explanation

Correct option: B

Epithelial tissue has vascular supply of its own

Option B (Epithelial tissue has vascular supply of its own) is correct because epithelial tissue is avascular.

232 Easy

232 of 307

Understanding +4 | -1

Select the correct route for the passage of sperms in male frogs:

View answer and explanation

Correct option: A

\mathrm{Testes} \to \mathrm{Vasa efferentia} \to \mathrm{Kidney} \to \mathrm{Bidder's canal} \to \mathrm{Urinogenital duct} \to \mathrm{Cloaca}

Option A (

\mathrm{Testes} \to \mathrm{Vasa efferentia} \to \mathrm{Kidney} \to \mathrm{Bidder's canal} \to \mathrm{Urinogenital duct} \to \mathrm{Cloaca}

) is correct because it represents the correct pathway for sperm transport in male frogs.

233 Easy

233 of 307

Remembering +4 | -1

The excretory organ in cockroach is

View answer and explanation

Correct option: B

Malpighian tubules

Option B (Malpighian tubules) is correct because Malpighian tubules are the primary excretory organs in cockroaches, responsible for removing nitrogenous waste from the hemolymph.

234 Easy

234 of 307

Remembering +4 | -1

Flat epithelial cells with irregular boundries are

View answer and explanation

Correct option: B

Squamous

Option B (Squamous) is correct because squamous epithelial cells are flat and have irregular boundaries, resembling scales.

235 Hard

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Understanding +4 | -1

Assertion (A) : Pseudo stratified epithelium gives the false appearance of stratified epithelium
Reason (R) : Pseudo stratified epithelium is made up of more than one layer of cells to provide protection against stress

View answer and explanation

Correct option: C

A

is true and

R

is false

Option C (A is true and R is false) is correct because pseudostratified epithelium appears stratified but is not, and its primary function is not protection against stress.

236 Medium

236 of 307

Understanding +4 | -1

Consider the following statements about the connective tissue
I. Their special function is linking and supporting the other organs tissue of the body
II. It is the most abundant type of animal tissue
III. Blood is a specialised connective tissue which contains collagen
IV. The cells of connective tissue secretes mucous
Which of the statement given above are incorrect?

View answer and explanation

Correct option: C

III and IV

Option C (III and IV) is correct because blood contains collagen but not as a primary component, and connective tissue cells secrete ground substance, not primarily mucous.

237 Hard

237 of 307

Remembering +4 | -1

Which steroid is used for transformation:-

View answer and explanation

Correct option: B

Cholesterol

Option B (Cholesterol) is correct because cholesterol serves as a precursor for the synthesis of steroid hormones, including testosterone, progesterone, cortisol, and others.

238 Medium

238 of 307

Analyzing +4 | -1

Study the following statements.

a. Desmosomes are present in cardiac muscles but absent in epithelial tissues

b. Bronchioles are lined by ciliated columnar epithelium

c. Ligaments are made of dense regular connective tissue but without collagen fibres

d. Pancreatic duct is lined by compound cuboidal epithelium

Which of the above are correct?

View answer and explanation

Correct option: B

Only b and d

Option B (Only b and d) is correct because bronchioles are lined by ciliated columnar epithelium, and the pancreatic duct is lined by compound cuboidal epithelium.

239 Easy

239 of 307

Analyzing +4 | -1

Pavo belongs to the class Aves whereas Periplaneta belongs to the largest phylum of kingdom Animalia. The common feature among two of them is

View answer and explanation

Correct option: B

Presence of crop and gizzard

Option B (Presence of crop and gizzard) is correct because both birds (Pavo) and cockroaches (Periplaneta) possess a crop for food storage and a gizzard for grinding food.

240 Medium

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Understanding +4 | -1

Statement I: Glandular epithelium composed of columnar or cuboidal cells that are specialized for secretion.

Statement II: Compound epithelium has limited role in secretion and absorption.

View answer and explanation

Correct option: A

Both S-I and S-II are correct

Option A (Both S-I and S-II are correct) is correct because glandular epithelium is specialized for secretion, and compound epithelium primarily functions in protection, limiting its role in secretion and absorption.

Revision notes and key takeaways

Review STRUCTURAL ORGANISATION IN ANIMALS in your textbook or class notes, then use this set to check your understanding.

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