DENDROLOGY AND SOCIETY
FAMILIES OF GYMNOSPERM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following groups of gymnosperms contains only one species?
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cycads
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horestails
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gnetophytes
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conifers
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ginkgoes
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Explanation:
Detailed explanation-1: -Option C Ginkgoales and Cycadales: Ginkgoales is an order of gymnosperm containing only one species which is Ginkgo biloba in the present day.
Detailed explanation-2: -Zamia pygmae is the smallest gymnosperm and Sequoia is the tallest. The Ginkgo biloba tree is the only surviving species of the division Ginkgophyta. This species is nearly into extinction and can only be found in certain rocky terrains of China and Japan.
Detailed explanation-3: -I. Classification Four major groups within the gymnosperms are usually recognized-these sometimes each considered its own phylum (Cycadophyta, Ginkgophyta, Gnetophyta, Pinophyta).
There is 1 question to complete.