Biology

Animal Tissue and Anatomy

1,715 Questions

Test your knowledge of animal tissues and anatomical structures with these practice questions. The set covers human organs, reproductive systems, and sensory receptors. These fundamental biology topics frequently appear in medical and competitive examinations.

Sensory receptorsReproductive organsBody structure frameworkEar drum pressureExcretory system

Animal Tissue and Anatomy Questions

Multiple choice biology human brain and sense organs introduction to sense organs eyes and their function the structure and function of the eye

A comb-like vascular structure pectin, used for nourishment and focussing in the eyes of

  1. Amphibians

  2. Birds

  3. Mammals

  4. Reptiles
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In the eye of the bird, a comb-like structure is present. It is called as pectin. It is soft and vascular. It is a rectangular plate. It projects into the vitreous humor from the blind spot. So, the correct answer is option B.

Multiple choice biology human brain and sense organs introduction to sense organs eyes and their function the structure and function of the eye

Ora serrata is

  1. A serrated junction between the retina and ciliary body

  2. Oral cavity of protochoradates

  3. Gland present in oral cavity of frog

  4. Present in utriculus of ear
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The ora Serrata is a toothlike junction between the peripheral retina and the pars plana and is composed of forward extensions of the retina and backward extensions of the ciliary body. So, the correct answer is option A.

Multiple choice biology human brain and sense organs introduction to sense organs eyes and their function the structure and function of the eye

In man, the nictitating membrane is 

  1. Absent

  2. Vestigial

  3. Non-functional

  4. Functional
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The plica semilunaris in humans is a small fold of tissue on the inside corner of the eye. It is the vestigial remnant of the nictitating membrane, an organ that is fully functional in some other species of mammals.

Multiple choice biology human brain and sense organs introduction to sense organs eyes and their function the structure and function of the eye

Pecten is a comb like structure found in the eyes of 

  1. Amphibians

  2. Reptiles

  3. Birds

  4. Mammals
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The pecten or pecten oculi is a comb-like structure of blood vessels, belonging to the choroid in the eye of a bird. It is a non-sensory, pigmented structure that projects into the vitreous body from the point, where the optic nerve enters the eyeball. The pecten nourishes the retina and controls the pH of the vitreous body.

Multiple choice biology human brain and sense organs introduction to sense organs eyes and their function the structure and function of the eye

In frog, eyelids are 

  1. Functional

  2. Non-functional

  3. Absent

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Frogs use their regular set of eyelids to keep their eyes moist and clean. They have a bottom lid that stays still and an upper lid that blinks. Frogs also have a third eyelid that serves a different purpose. This one, called as the nictitating membrane, is a semitransparent lid that covers the eye completely, helping the frog see underwater and hide from predators. 

So, the correct answer is option A.

Multiple choice biology human brain and sense organs introduction to sense organs eyes and their function the structure and function of the eye

Guanine pigment is present in

  1. Tapetum lucidum

  2. Tapetum fibrosum

  3. Tapetum cellulosum

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The tapetum lucidum is a layer of tissue in the eye of many vertebrates. Lying immediately behind the retina it reflects visible light back through the retina, increasing the light available to the photoreceptors. The tapetum lucidum contributes to the superior night vision of some animals. Many of these animals are nocturnal, especially carnivores that hunt their prey at night, while others are deep sea animals. Choroidal guanine tapetum is seen in Elasmobranchii (skates, rays, and sharks) and chimaeras. The tapetum is a palisade of cells containing stacks of flat hexagonal crystals of guanine.

Multiple choice zoology diversity in living world hemichordata phylum hemichordata chordates and hemichordates

In Amphioxus notochord is present only in

  1. In embryo

  2. In adult

  3. Both A and B

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Amphioxus are fish-like marine chordates. The notochord is a flexible rod-shaped body found in embryos of all chordates. It is composed of cells derived from the mesoderm and defines the primitive axis of the embryo. In case of Amphioxus, it is retained in the adults.

So, the correct answer is option C.

Multiple choice biology food and it's constituents energy giving food carbohydrate and its test biological molecules

This is a storing organ.

  1. Gall bladder

  2. Liver

  3. Pancreas

  4. Colon
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The gallbladder is a small storage organ located inferior and posterior to the liver. Though small in size, the gallbladder plays an important role in our digestion of food. The gallbladder holds bile produced in the liver until it is needed for digesting fatty foods in the duodenum of the small intestine.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

In foggy and hazy environment, birds are able to locate position of sun and their path by means of

  1. Infra-red wavelength

  2. Ultra-violet radiations

  3. Magnetic system

  4. Pheromones
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In foggy and hazy environment, the visible spectrum of the sun is not able to penetrate and so, humans find it difficult to visualize. However, the UV-A can penetrate through the fog, which cannot be detected by human eyes as t falls behind the visible spectrum of VIBGYOR. Birds are capable of recognizing more colors than the humans, they can detect the UV rays as well that allows them to navigate in the foggy and hazy conditions as well. These also allow the birds to track their migratory routes.

Hence, the correct answer is 'Ultra-violet radiations'.

Multiple choice zoology insects and human welfare bee keeping apiculture apiculture, sericulture and fisheries

What is true in case of Honey Bee?

  1. Male diploid, female haploid

  2. Male diploid, female diploid

  3. Male haploid, female haploid

  4. Male haploid, female diploid
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
In case of honey Bees, males develop from unfertilized eggs and are haploid, and females develop from fertilized eggs and are diploid (Haplodiploidy).

So, the correct answer is 'Male haploid, female diploid'.
Multiple choice biology animal behaviour ethology coordination in human beings- chemical control endocrine system in humans

Which one of the following is not true of singing in male birds?

  1. All songs are learned from their parents

  2. It is done to claim a territory

  3. They generally sing at dawn or dusk.

  4. The typical song is characteristic of a species
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Singing is an essential part of bird life, but it's costly in terms of time and energy. Singing loud and proud first thing in the morning tells everyone within hearing distance that a bird is strong and healthy enough to survive the night. This is attractive to potential mates, and lets the competitors know that they still around and in charge of your territory. 

So the correct option is 'all songs are learned from their parents'.