Biology questions
20584 published questions with worked solutions.
- Match the following columns and choose the correct option. Column-I: (A) Xylem vessels, (B) Xylem tracheids, (C) Xylem fibre, (D)...
- The tissue which perpetuates itself by active cell division is
- Cork tissue arises from
- Identify from the following, a plant tissue in which lignin does not occur in the cell walls.
- Pith is a central part of the ground tissues generally made up of
- Collenchyma is
- **Statement 1:** In a vessel, septa among the adjoining cells get dissolved. **Statement 2:** Companion cells are component of...
- Tyloses thickenings are seen in
- Vessels are absent in this angiosperm.
- The phloem of angiosperms differs from that of other vascular plants by the presence of
- Complex tissue includes
- Meristem consists of
- Intercalary meristem is a derivative of
- The length of different internodes in a culm of sugarcane is variable because of
- The apical meristem of the root is present
- Which of the following statements are not true? I. Cork cambium is otherwise called phellogen. II. Cork is otherwise called...
- Root caps are absent in
- **Statement 1:** Many organs of aquatic plants float in water. **Statement 2:** Large air gaps are present in the collenchyma...
- The jute fibres anatomically are
- The waxy material deposited in the Casparian strip of the endodermis is