NEET Biology Structural Organisation in Animals MCQs Set 08

Biology Objective Questions and Answers: Animal Tissues

Explore reliable objective questions for Animal Tissues tailored for NEET learners. Utilizing these Biology multiple-choice formats ensures thorough preparation and strengthens problem-solving speed for upcoming school assessments.

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Multiple Choice Questions

Question 1: Earthworm and cockroach both have
(a) Dorsal nerve cord
(b) Unsegmented body
(c) Malpighian tubule
(d) Ventral nerve cord
Show Answer & Explanation

Answer: (d) Ventral nerve cord

Explanation:
1. Both earthworm and cockroach, being non-chordates, have a double solid ventral nerve cord.

Teacher's Note:
1. Chordates have dorsal hollow cord.

Question 2: Which of the following statements is incorrect w.r.t. reproductive system of earthworm?
(a) There are two pairs of testes present in 10th and 11th segments. Their ducts i.e. vas deferens run upto the 18th segment where they join the prostatic duct
(b) Accessory glands are present on the ventral side of the 17th and 19th segments
(c) One pair of ovaries is attached at the intersegmental septum of the 13th and 14th segments
(d) Four pairs of sac like structures called spermathecae are found one pair each in 6th to 9th segments
Show Answer & Explanation

Answer: (c) One pair of ovaries is attached at the intersegmental septum of the 13th and 14th segments

Explanation:
1. The ovaries lie at the intersegmental septum of the 12th and 13th segments, not 13th and 14th.

Teacher's Note:
1. One pair of ovaries.

Question 3: Periplaneta americana and Blatta orientalis differ mainly from each other in
(a) Body size
(b) Wing length
(c) Length of antenna
(d) Life-history
Show Answer & Explanation

Answer: (b) Wing length

Explanation:
1. Periplaneta americana has wings longer than the abdomen in both sexes, whereas in Blatta orientalis wings are shorter or vestigial (females).

Teacher's Note:
1. Species differ in wing length.

Question 4: In cockroach, the body inspite of being covered by an exoskeleton of strong chitinous cuticle remains flexible due to
(a) Tergites
(b) Sternites
(c) Pleurites
(d) Arthrodial membranes
Show Answer & Explanation

Answer: (d) Arthrodial membranes

Explanation:
1. The sclerites are joined by flexible arthrodial membranes, which keep the body flexible.

Teacher's Note:
1. Intersegmental joints.

Question 5: Vestigial wings are found in
(a) Male Blatta
(b) Female Blatta
(c) Male Periplaneta
(d) Female Periplaneta
Show Answer & Explanation

Answer: (b) Female Blatta

Explanation:
1. In Blatta orientalis the female has vestigial wings.

Teacher's Note:
1. Males have short wings.

Question 6: In cockroach elytra are articulated to the tergites of
(a) Prothorax
(b) Mesothorax
(c) Metathorax
(d) Abdomen
Show Answer & Explanation

Answer: (b) Mesothorax

Explanation:
1. Elytra (tegmina) are the forewings, attached to the mesothorax; the hindwings are on the metathorax.

Teacher's Note:
1. Wings on 2nd and 3rd thoracic segments.

Question 7: Which mouth part of cockroach acts as upper lip?
(a) Labium
(b) Labrum
(c) First maxilla
(d) Hypopharynx
Show Answer & Explanation

Answer: (b) Labrum

Explanation:
1. The labrum is the upper lip and the labium the lower lip.

Teacher's Note:
1. Hypopharynx is the tongue.

Question 8: Position of head in relation to body axis of cockroach is known as
(a) Epignathous
(b) Hypognathous
(c) Prognathous
(d) None of these
Show Answer & Explanation

Answer: (b) Hypognathous

Explanation:
1. The head of a cockroach is hypognathous, with mouthparts directed downwards.

Teacher's Note:
1. Prognathous: forward.

Question 9: Endoskeletal structure present in the head is
(a) Apodeme
(b) Tentorium
(c) Fenestra
(d) Clypeus
Show Answer & Explanation

Answer: (b) Tentorium

Explanation:
1. The tentorium is the endoskeletal structure of the head, giving support to the brain.

Teacher's Note:
1. Internal skeleton.

Question 10: Periplaneta has mosaic vision. Each ommatidium is composed of following parts, except
(a) Corneal lens
(b) Refractive crystalline cone
(c) Rhabdome
(d) Phaosome
Show Answer & Explanation

Answer: (d) Phaosome

Explanation:
1. Ommatidium has cornea (corneal lens), crystalline cone, rhabdome and retinular cells; phaosomes belong to earthworm photoreceptors.

Teacher's Note:
1. Mosaic vision.

Question 11: Which of the following is wrong match in cockroach?
(a) Head – Hypognathous
(b) Heart – 13 chambered
(c) Anal styles – Female cockroach
(d) Excretion – Malpighian tubules
Show Answer & Explanation

Answer: (c) Anal styles – Female cockroach

Explanation:
1. Anal styles are present only in male cockroaches, so female with anal styles is a wrong match.

Teacher's Note:
1. Both sexes have cerci.

Question 12: Movement of which muscles can alter the pericardial space in cockroach?
(a) Circular
(b) Longitudinal
(c) Alary
(d) Ciliary
Show Answer & Explanation

Answer: (c) Alary

Explanation:
1. Alary muscles change the size of the pericardial sinus and help blood circulation in the cockroach.

Teacher's Note:
1. Heart has 13 chambers.

Question 13: Number of segments in the leg of cockroach is
(a) Five
(b) Three
(c) Six
(d) Nine
Show Answer & Explanation

Answer: (a) Five

Explanation:
1. Each cockroach leg has five podomeres: coxa, trochanter, femur, tibia and tarsus.

Teacher's Note:
1. Tarsus has five pieces.

Question 14: Main function of blood vascular system in cockroach is
(a) Distribution of oxygen
(b) Distribution of absorbed nutrients
(c) Distribution of heat
(d) All of these
Show Answer & Explanation

Answer: (b) Distribution of absorbed nutrients

Explanation:
1. The open blood vascular system of cockroach mainly distributes nutrients; oxygen is carried by tracheae.

Teacher's Note:
1. Blood has no respiratory pigment.

Question 15: In Periplaneta each walking leg consists of five segments. Which of the following is a correct sequence?
(a) Trochanter, coxa, femur, tibia, tarsus
(b) Coxa, trochanter, femur, tibia, tarsus
(c) Coxa, femur, trochanter, tibia, tarsus
(d) Trochanter, femur, coxa, tibia, tarsus
Show Answer & Explanation

Answer: (b) Coxa, trochanter, femur, tibia, tarsus

Explanation:
1. The leg segments from the body outwards are coxa, trochanter, femur, tibia and tarsus.

Teacher's Note:
1. Coxa is the base.

Question 16: Structure that helps the cockroach to walk on smooth surfaces is
(a) Trochanter
(b) Plantulae
(c) Cardo
(d) Scape
Show Answer & Explanation

Answer: (b) Plantulae

Explanation:
1. Plantulae (adhesive pads between tarsal segments) help the cockroach walk on smooth surfaces.

Teacher's Note:
1. Also arolium.

Question 17: Number of spiracles in Periplaneta americana is
(a) Ten
(b) Twenty
(c) Eight
(d) Six
Show Answer & Explanation

Answer: (b) Twenty

Explanation:
1. There are 10 pairs, i.e. 20 spiracles: 2 pairs thoracic and 8 pairs abdominal.

Teacher's Note:
1. Tracheal openings.

Question 18: Function of stomodaeal valve in the gut of the cockroach is to prevent the regurgitation of partially digested food from
(a) Mid-gut into crop
(b) Preoral cavity
(c) Mid-gut into hind-gut
(d) None of these
Show Answer & Explanation

Answer: (a) Mid-gut into crop

Explanation:
1. The stomodaeal valve at the end of the gizzard prevents food from the midgut flowing back into the crop.

Teacher's Note:
1. Gizzard-mesenteron junction.

Question 19: Which of the two parts in cockroach are fundamentally similar in structure?
(a) Anal styles and labrum
(b) Wings and anal cerci
(c) Maxillae and legs
(d) Mandibles and antennae
Show Answer & Explanation

Answer: (c) Maxillae and legs

Explanation:
1. Maxillae resemble legs in having the same number of segments, so they are fundamentally similar (homologous).

Teacher's Note:
1. Appendages are modified legs.

Question 20: Ootheca in Periplanata americana is secreted by
(a) Collaterial glands
(b) Conglobate gland
(c) Mushroom glands
(d) Gynatrium
Show Answer & Explanation

Answer: (a) Collaterial glands

Explanation:
1. Collaterial glands secrete the ootheca in female cockroaches.

Teacher's Note:
1. Accessory gland.

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Animal Tissues Objective Questions & Solutions for NEET Biology

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