CBSE Class 11 Science: Plant Kingdom FAQs

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What is the taxonomic rank that includes algae, bryophytes, pteridophytes, gymnosperms and angiosperms?

The taxonomic rank that includes algae, bryophytes, pteridophytes, gymnosperms and angiosperms is the plant kingdom or Kingdom Plantae.

When did the very first land plants appear according to the text?

The very first land plants appeared roughly 470 million years ago.

What organisms were once considered part of the plant kingdom but are now classified differently?

Blue-green algae and lichens were once considered part of the plant kingdom but are now classified differently.

What is the strict definition of plants according to the text?

Plants, in a strict sense, are technically organisms that include green algae and land plants and possess chlorophyll a and b, have plastids bound by two membranes, and are capable of photosynthesis and storing starch. Signup and view all the answers

Why were some organisms historically grouped under the plant kingdom?

Historically, organisms that could not be classified under animals were grouped under plants. Signup and view all the answers

What does the text suggest about the historical classification of organisms into the plant kingdom?

The text suggests that the historical classification of organisms into the plant kingdom was flawed and based on incorrect reasoning. Signup and view all the answers