NEET questions
18092 published questions with worked solutions.
- The growth of root and stem in length with the help of apical meristem is called …A… . Apart from primary growth most...
- Tissues involved in secondary growth is/are I. Intercalary stem, II. Vascular cambium, III. Cork cambium
- The merismatic layer that is responsible for cutting off vascular tissues (xylem and phloem) is called vascular cambium. In the...
- The primary xylem is in the centre of the stem, while primary phloem is pushed outward and crushed into the cortex by the...
- The activity of cambium under the control of many physiological and environmental factors. In temperate regions, the climatic...
- The autumn wood or latewood has less active cambium and, thus forms fewer xylem elements.
- Cambium is generally more active on the inner side than the outer. As a result the amount of secondary xylem produced is more...
- Medullary or pith rays are
- In young stem, the vascular cambium is
- In dicot stem, secondary xylem lie towards the …A… and secondary phloem lie towards the …B… . Choose the correct combination of...
- Intrafascicular cambium is present in between the
- During secondary growth new meristematic tissues arising in the cortical region of the stem are called
- Narrow bands of parenchymatous tissue which passes through the secondary xylem and phloem radially are called
- Bark includes I. Phellogen, II. Phellem, III. Secondary phloem, IV. Secondary xylem Select the correct combination.
- In any dicot root having secondary growth, the cork is the
- In dicot root, the vascular cambium are
- I. The 1° and 2° phloem get gradually crushed due the continued formation and accumulation of 2° xylem. II. 1° xylem remains more...
- I. Sieve tube conduct organic food longitudinally. II. Xylem parenchyma cells stores food and help in lateral conduction of sap....
- In dicot root, the cork cambium is formed with the help of
- I. Youngest secondary phloem is just outside the cambium, while youngest secondary xylem is present inside the cambium. II....