Let's solve each question one by one with clear explanations.
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Q.13. What phylum do human beings belong to?
Given taxonomic categories for humans:
- Eukarya (Domain)
- Animalia (Kingdom)
- Chordata (Phylum)
- Mammalia (Class)
- Primates (Order)
- Hominidae (Family)
- Homo (Genus)
- *Homo sapiens* (Species)
We are asked:
What phylum do humans belong to?
Answer:
The
phylum is the taxonomic rank just below kingdom and above class. In this list, the phylum is
Chordata.
✔ Correct answer: b) Chordata
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Explanation: Humans have a notochord (at some stage of development), dorsal hollow nerve cord, pharyngeal slits, and post-anal tail — all characteristics of the phylum
Chordata.
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Q.14. What kingdom do amoeba and paramecium belong to?
Amoeba and Paramecium are both
unicellular eukaryotic organisms.
- They are
not fungi (fungi are multicellular or yeast-like, absorb nutrients).
- They are
not bacteria (they are eukaryotes, have nuclei and membrane-bound organelles).
- They are
not plants (they don’t perform photosynthesis; they ingest food).
They are classified under the
kingdom Protista, which includes diverse unicellular eukaryotes that don't fit into other kingdoms.
✔ Correct answer: a) Protista
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Explanation: Both *Amoeba* and *Paramecium* are protists. *Amoeba* moves using pseudopodia, while *Paramecium* uses cilia. Both are heterotrophic and reproduce asexually.
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Q.15. Which of the following is the properly written scientific name for the onion?
Scientific names follow
binomial nomenclature:
- First word: Genus (capitalized)
- Second word: Species (lowercase)
- Both italicized (or underlined in handwritten form)
The correct scientific name for the onion is
Allium cepa.
Now check the options:
a)
Allium cepa →
✔ Correct (proper capitalization and italics implied in writing)
b) allium Cepa →
✘ Incorrect (both words lowercase, second word capitalized)
c) Allium Cepa →
✘ Incorrect (species name should be lowercase)
d) Alium cepa →
✘ Incorrect (spelling error: "Alium" instead of "Allium")
✔ Correct answer: a) Allium cepa
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Explanation: The genus is *Allium*, and the species is *cepa*. Always capitalize the genus, lowercase the species, and italicize (or underline in handwritten notes).
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✔ Final Answers:
-
Q.13: b) Chordata
-
Q.14: a) Protista
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Q.15: a) Allium cepa
Let me know if you'd like a visual chart or mnemonic to remember these!
Parent Tip: Review the logic above to help your child master the concept of classification and taxonomy worksheet.
