Both pteridophytes and bryophytes lack flowers and seeds, yet they are placed in different groups. Class 9

Both pteridophytes and bryophytes lack flowers and seeds, yet they are placed in different groups. Class 9

Question 1.

Both pteridophytes and bryophytes lack flowers and seeds, yet they are placed in different groups. Explain this classification using their key features. Class 9

Answer:

Though both lack flowers and seeds:

1. Bryophytes do not have vascular tissues (xylem and phloem) and have a simple body structure.
2. Pteridophytes have vascular tissues and a more developed body structure with roots, stems, and leaves.

Hence, they are placed in different groups.

Question 2.

In the classification hierarchy, which group - class or genus - has fewer members but more features in common? Explain your answer. Class 9

Answer:

Genus has fewer members but more features in common.

As we move from class to genus in the classification hierarchy, the number of organisms decreases and the similarity among them increases. Organisms in the same genus are very closely related.