A dorsal horn is present on the___________of mulberry silk worm (caterpillar).
- $8^th$ abdominal segment
- $5^th$ abdominal segment
- $2^nd$ thoracic segment
- Head
The Correct Option is A
Approach Solution - 1
Approach Solution -2
Explanation:
- The body of a mulberry silkworm is divided into three main parts: head, thorax, and abdomen.
- The abdomen is the largest part of the body and contains 10 segments.
- The dorsal horn is found on the dorsal surface (upper side) of the eighth abdominal segment of the caterpillar.
- OTHER OPTIONS:
- Head: The head of the silkworm contains mouthparts and sensory organs only.
- 2nd thoracic segment: The thorax is the middle section of the body and contains the legs.
- 5th abdominal segment: The dorsal horn is specifically located on the 8th abdominal segment, not the 5th.
Thus, the right answer to this question is the 8th abdominal segment.
Top Questions on Kingdom Animalia
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Concepts Used:
Animal Kingdom
Animals are eukaryotic, multicellular species that belong to the Kingdom Animalia. Every animal has a distinct characteristic. They get energy either by feeding on plants or on other animals. There are millions of species that have been recognized, few shares similar characteristics while others vary drastically.
Kingdom Animalia comprises all animals. In the midst of the five kingdoms, the largest kingdom is the animal kingdom. Animals are multicellular eukaryotes. Though, like plants, they do not possess chlorophyll or a cell wall. Therefore, members of the animal kingdom indicate a heterotrophic mode of nutrition. Kingdom Animalia is further classified into ten different subphyla based on their body designs or differentiations.
The different phyla of the Kingdom Animalia are as follows:
- Porifera
- Coelenterata (Cnidaria)
- Platyhelminthes
- Nematoda
- Annelida
- Arthropoda
- Mollusca
- Echinodermata
- Hemichordata
- Chordata
Read More: Classification of Animal Kingdom