Which of the following correctly describes the relationship between symmetry and lifestyle in animals?

The correct answer is C: Bilateral symmetry is associated with active movement and cephalization. Bilateral symmetry with cephalization (concentration of sensory organs at the anterior end) is associated with active, directional movement. Radial symmetry is typical of sessile or slow-moving organisms.

The resting membrane potential of a typical neuron is approximately:

The correct answer is B: -70 mV. The resting potential is maintained at -70 mV primarily by the Na+/K+ ATPase pump and differential ion permeability.

Which developmental feature indicates that birds and dinosaurs share a common ancestry?

The correct answer is A: Presence of scales on legs. Birds retain scales on their legs/feet, a feature inherited from theropod dinosaur ancestors. This homologous structure provides evidence of their evolutionary relationship.

A 32-year-old man presents with azoospermia. Semen analysis shows normal seminal fluid parameters but absence of spermatozoa. What is the most likely diagnosis?

The correct answer is B: Obstructive azoospermia. Normal seminal fluid with absent sperm indicates obstruction in the reproductive tract rather than failed production. This is obstructive azoospermia, often due to vasectomy, absence of vas deferens, or ejaculatory duct obstruction.

Which of the following is the correct sequence of ecological succession in a freshwater pond ecosystem?

The correct answer is A: Algae → Submerged plants → Emergent plants → Terrestrial plants. Ecological succession in freshwater ecosystems follows a predictable pattern starting with pioneer algae, progressing to submerged aquatic vegetation, then emergent plants, and finally leading to terrestrial vegetation as the habitat transitions.

Home

Home › Subjects › NEET Zoology › Animal Kingdom

NEET Zoology
Animal Kingdom

Zoology questions for NEET UG — Animal Kingdom, Human Physiology, Genetics, Evolution.

52 Q 6 Topics Take Mock Test

Difficulty: All Easy Medium Hard 51–52 of 52

Topics in NEET Zoology

All Animal Kingdom 100 Human Physiology 100 Genetics & Evolution 100 Reproductive Health 100 Ecology & Environment 100 Biotechnology & Applications 40

Q.51 Medium Animal Kingdom

The notochord is replaced by the vertebral column in:

A All chordates

B Only in fish

C Only in adult vertebrates

D Only in mammals

Correct Answer: C. Only in adult vertebrates

EXPLANATION

In adult vertebrates, the notochord is replaced by the vertebral column during embryonic development, though the notochord persists in some lower chordates.

Test

Q.52 Medium Animal Kingdom

Which of the following is NOT a characteristic of arthropods?

A Jointed appendages

B Chitinous exoskeleton

C Closed circulatory system

D Segmented body

Correct Answer: C. Closed circulatory system

EXPLANATION

Arthropods have an open circulatory system, not closed. They are characterized by jointed appendages, chitinous exoskeleton, and segmented bodies.

Test

1…4 5 6

All Subjects & Topics

Govt. Exams

Entrance Exams

Teacher Exams

Subjects

Quick Links

NEET Zoology Animal Kingdom

NEET Zoology
Animal Kingdom