Statement I: | In roots, the protoxylem lies towards the center (pith) and the metaxylem lies towards the periphery of the organ. This type of primary xylem is called endarch. |
Statement II: | In stems, the protoxylem lies towards the periphery and the metaxylem lies towards the center. Such an arrangement of the primary xylem is called an exarch. |
Statement I: | Phloem fibers (bast fibers) are made up of sclerenchymatous cells and are absent in the primary phloem but are found in the secondary phloem. |
Statement II: | The phloem parenchyma stores food material and other substances like resins, latex, and mucilage and is absent in most of the monocotyledons. |
I: | the stomata are present on both the surfaces of the epidermis |
II: | the mesophyll is not differentiated into palisade and spongy parenchyma |
1. | Nuclei | 2. | Cytoplasm |
3. | P-protein | 4. | Callose |
I: | occurs in layers below the epidermis in most of the dicotyledonous plants. |
II: | consists of cells that are much thickened at the corners due to deposition of cellulose, hemicellulose, and pectin. |
III: | never contains chloroplasts. |
IV: | provides mechanical support to the growing parts of the plant such as the young stem and petiole of a leaf. |
Statement I: | Fascicular vascular cambium, interfascicular cambium, and cork-cambium are examples of lateral meristems. |
Statement II: | These are responsible for producing secondary tissues. |
A | B | C | D | |
1. | Bundle sheath cells | Palisade mesophyll | Spongy mesophyll | Abaxial epidermis |
2. | Bundle sheath cells | Palisade mesophyll | Spongy mesophyll | Adaxial epidermis |
3. | Spongy mesophyll | Bundle sheath cells | Palisade mesophyll | Abaxial epidermis |
4. | Palisade mesophyll | Spongy mesophyll | Bundle sheath cells | Adaxial epidermis |