CLASSIFICATION

Total Questions: 30

21. ______ are details of appearance or behavior or, in other words, a particular form or a particular function in classification of organisms. [S.S.C. Online CHSL (T-I) 7.03.2018 (Shift-II)]

(a) Speciation
(b) Evolution
(c) Characteristics
(d) Illustration

Correct Answer: (c) Characteristics

Solution:Characteristics are details of appearance or behavior or, in other words, a particular form or a particular function in the classification of organisms.

The formation of distinct and new species in the course of evolution is known as speciation.
Evolution is the process of change of all life forms over generations.
An Illustration is a visual explanation or interpretation of any process, concept, or text.

22. An undifferentiated layer, _____ is present in between the ectoderm and the endoderm. [S.S.C. Online CGL (T-I) 05.12.2022 (Shift-IV)]

(a) Coelom
(b) Acoelomea
(b) Acoelomea
(d) Mesoglea

Correct Answer: (d) Mesoglea

Solution:In diploblastic animals (like Cnidarians), the body wall is composed of two primary germ layers: an outer ectoderm and an inner endoderm. Between these two layers, there is a non-cellular, gelatinous, and undifferentiated layer called the mesoglea. Triploblastic animals, in contrast, have a third germ layer called the mesoderm between the ectoderm and endoderm.

23. Spiders belong to which class of animals? [S.S.C. Online CHSL (T-I) 18.01.2017 (Shift-I)]

(a) Arachnids
(b) Aves
(c) Gastropods
(d) Anthozoa

Correct Answer: (a) Arachnids

Solution:Spiders belong to the class Arachnida, which is a subphylum of arthropods. Arachnids are characterized by eight legs, no antennae, and a body divided into two main segments: a cephalothorax and an abdomen.

24. Which of the following is the study of insects and their relationship to humans, the environment, and other organisms? [S.S.C. Online CGL (T-I) 18.04.2022 (Shift-III)]

(a) Ornithology
(b) Entomology
(c) Ethology
(d) Mycology

Correct Answer: (b) Entomology

Solution: Entomology is the scientific study of insects. This field encompasses various aspects, including insect biology, ecology, classification, behavior, and their interactions with other living things and the environment, including their impact on humans (e.g., pests, beneficial insects).

25. What species do sponges belong to? [S.S.C. Online CHSL (T-I) 8.02.2017 (Shift-II)]

(a) Protozoa
(b) Annelida
(c) Porifera
(d) Cnidaria

Correct Answer: (c) Porifera

Solution:Sponges are simple multicellular animals that belong to the phylum Porifera. They are characterized by their porous bodies and lack of true tissues and organs.

26. Shrimp comes under ______ species. [S.S.C. Online CHSL (T-I) 10.01.2017 (Shift-III)]

(a) Arthropoda
(b) Unitanodermata
(c) Cnidaria
(d) Chordata

Correct Answer: (a) Arthropoda

Solution:Shrimp comes under Arthropoda species. Shrimp are swimming, decapod crustaceans classified in the infraorder Caridea, characterized by a body that is compressed from side to side, long antennae and legs, thin and semitransparent exoskeleton, lamellar gills, and fan-like tail. They are found widely around the world in both fresh and salt water.

27. The study of insects is called ______ . [S.S.C. Online Graduate Level (T-I) 13.06.2019 (Shift-II)]

(a) Anthropology
(b) Ornithology
(c) Entomology
(d) Geology

Correct Answer: (c) Entomology

Solution:Entomology is a branch of zoology that is used to study insects. Entomology is a study that deals with taxons. Overall, entomology helps in understanding molecular genetics, behavior, biomechanics, physiology, morphology, anatomy, developmental biology, and ecology of insects. Insects form about two-thirds of the known organisms on earth. Insects interact with all the organisms on earth.

28. ______ is the term used for breeding of fish in specially constructed tanks and ponds. [S.S.C. Online CHSL (T-I) 18.03.2020 (Shift-I)]

(a) Pisciculture
(b) Viticulture
(c) Horticulture
(d) Agriculture

Correct Answer: (a) Pisciculture

Solution:Pisciculture, also known as fish farming, is the rearing of fish for food in enclosures such as fish ponds or tanks. The fish are reared and raised in enclosures such as cages, open nets, tanks, and ponds.

29. Amoeba belongs to the phylum— [S.S.C. Online CHSL (T-I) 7.01.2017 (Shift-III)]

(a) Protozoa
(b) Annelida
(c) Porifera
(d) Platyhelminthes

Correct Answer: (a) Protozoa

Solution:An amoeba is a single-celled eukaryotic organism that has no definite shape and moves with the help of false feet known as pseudopodia.

Domain: Eukaryota
Class: Tubulinea
Order: Tubulinida
Family: Amoebidae
Genus: Amoeba
Kingdom: Protozoa

30. Bacteria, blue-green algae or cyanobacteria and mycoplasma are examples of organisms of which kingdom? [S.S.C. Online CHSL (T-I) 22.03.2018 (Shift-I)]

(a) Plantae
(b) Monera
(c) Protista
(d) Animalia

Correct Answer: (b) Monera

Solution:Bacteria, blue-green algae or cyanobacteria, and mycoplasma are examples of the Monera kingdom. The Monera kingdom contains unicellular organisms with a prokaryotic cell organization (having no nuclear membrane), such as bacteria. They are single-celled organisms with no true nuclear membrane (prokaryotic organisms).

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