25 Questions
What does the term 'entomology' refer to?
The branch of biology that focuses on the study of insects
What is the primary focus of entomology?
The study of insects
What is the relationship between entomology and Arthropoda?
Entomology studies the relationships with other Arthropoda
What is the scope of study in entomology?
Only insects and their relationships with other Arthropoda
What is the meaning of 'entomology' in biology?
The branch of biology that focuses on the study of insects
What is the subphylum of the class Insecta or Hexapoda?
Atelocerata
What is a characteristic of the head of an insect?
It bears a pair of antennae and mouth parts
How many pairs of legs does the thorax of an insect carry?
Three pairs
What is a characteristic of the abdomen of an insect?
It is devoid of ambulatory appendages
Where is the genital of an insect situated?
Near the posterior end of the body
What is the characteristic of the body of phylum Arthropoda?
Bilaterally symmetrical
What is the main function of the dorsal heart in phylum Arthropoda?
Circulation
What is the main function of malpighian tubes in phylum Arthropoda?
Excretion
What is the characteristic of the nerve cord in phylum Arthropoda?
Ventral nerve cord
What is the characteristic of sexes in phylum Arthropoda?
The sexes always separate
How many subphyla are classified under Phylum Arthropoda?
Four
Which of the following subphyla is NOT a part of Phylum Arthropoda?
Mollusca
Which subphylum is most closely related to spiders and scorpions?
Chelicerata
What is the name of the subphylum that includes crabs and lobsters?
Crustacea
Which subphylum is the most recently evolved?
Atelocerata
What is the characteristic of the immature stage of insects in the Endopterygota division?
Wings developed internally
What is the number of orders in the Division Endopterygota with complete metamorphosis?
Nine orders
What is the term for the immature stage of insects in the Endopterygota division?
Larva
What is the difference between the immature stage and adult stage of insects in the Endopterygota division?
In both size and shape
How many orders are there in the Endopterygota division?
Sixteen orders
Study Notes
Entomology and Arthropoda
- Entomology is the branch of biology that focuses on the study of insects.
- Insects are related to other Arthropoda.
Taxonomic Position of Insects
- Insects belong to the phylum Arthropoda.
- Phylum Arthropoda has four subphyla: Trilobita, Chelicerata, Crustacea, and Atelocerata.
- Insects belong to the subphylum Atelocerata and class Insecta or Hexapoda.
Characteristics of Phylum Arthropoda
- Bilaterally symmetrical body.
- Body divided into segments.
- Chitinous exoskeleton.
- Haemocoelic body cavity containing circulating blood.
- Dorsal heart and ventral nerve cord.
- Tracheal system.
- Excretion usually by means of malpighian tubes.
- Sexes are always separate.
Characteristics of Class Insecta
- Tracheate arthropods with body divided into head, thorax, and abdomen.
- Head bears a pair of antennae and mouth parts.
- Thorax carries three pairs of legs and one or two pairs of wings (or without).
- Abdomen is devoid of ambulatory appendages and genital is situated near the posterior end of the body.
Division Endopterygota
- Undergoes complete metamorphosis.
- Wings developed internally.
- Immature stage called larva and pupa are different from adults.
- Consists of nine orders.
- Insects are divided into 16 orders.
This quiz covers the basics of entomology, the branch of biology that focuses on the study of insects and their relationships with other arthropods.
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