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Annual rings composed of greater amount ...

Annual rings composed of greater amount of vessels with wider cavities are known as ……… wood

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**Step-by-Step Solution:** 1. **Understanding Wood Formation**: Wood is primarily composed of secondary xylem, which is formed through the secondary growth of plants. This growth is facilitated by the vascular cambium, which produces new xylem (wood) and phloem (bark). 2. **Annual Rings**: The growth of wood occurs in rings, known as annual rings. Each ring represents one year of growth and can vary in composition based on environmental conditions. 3. **Types of Wood**: The annual rings can be divided into two types: spring wood (early wood) and summer wood (late wood). Spring wood is formed during the early part of the growing season when conditions are favorable for growth. ...
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In temperate regions, during spring season, cambium is very active and produces a large number of xylary elements having vessel with wider cavities wood formed in this way is called as

Read the following statements. A. All tissue on the inner side of the endodermis constitute the stele. B. Peripheral vascular bundles are generally larger than the centrally located ones in monocot stems. C. In late wood, cambium produces a large number of xylary elements having vessels with wider cavities. D. The cork is impervious to water due to suberin deposition in the cell membrane. How many of the above statements are incorrect?

Match the columns given below correctly. {:("Types of wood" ,"Description"),("1. Early wood","i. Has narrow vessels."),("2. Late wood","ii. Dead elements with highly lignified walls"),("3. Heartwood","iv. Vessels with wider cavities."),("4. Sapwood","iv. Lighter in colour."):}

One growth ring is formed per year and (a) It is called as annular ring (b) It is composed of spring and autumn wood (c ) It is result of seasonal activity of cambium (d) It is very distinct in plants of tropical climate

Energy is released when an electron is added to neutral isolated gaseous atom in its ground state to give monoanion and this is known as EA , or Delta_(eg)H_(1)^(ɵ) . The greater the amount of energy released the greater is the EA . EA is expressed in eV a"atom"^(-1) or kcal or K\kJ mol^(-1) . Select the correct statements (more than one correct)

Energy is released when an electron is added to neutral isolated gaseous atom in its ground state to give monoanion and this is known as EA , or Delta_(eg)H_(1)^(ɵ) . The greater the amount of energy released the greater is the EA . EA is expressed in eV a"atom"^(-1) or kcal or K\kJ mol^(-1) . The EA values of element depends on the following: i. Nuclear charge ii. Electroniv configuration iii. Atomic size iv. chemical environment

Energy is released when an electron is added to neutral isolated gaseous atom in its ground state to give monoanion and this is known as EA , or Delta_(eg)H_(1)^(ɵ) . The greater the amount of energy released the greater is the EA . EA is expressed in eV a"atom"^(-1) or kcal or K\kJ mol^(-1) . EA values of N and P are exceptionally low, because

Energy is released when an electron is added to neutral isolated gaseous atom in its ground state to give monoanion and this is known as EA , or Delta_(eg)H_(1)^(ɵ) . The greater the amount of energy released the greater is the EA . EA is expressed in eV "atom"^(-1) or kcal or kJ mol^(-1) . Select the correct statement (more than one correct)

A transverse section of the trunk of a tree shows concentric rings which are known as annual rings. How are these rings formed? What is the significance of these rings?

Go through the following statements (i) The cambium is generally more acitve on the inner side than on the outer. (ii) The autunn wood is darker and has a higher density than spring wood. (iii) In stem, the secondary xylem shows distinction into protoxylem and metaxylem and occurs in the form of patches. (iv) The tracheids and vessels of the sapwood get plugged by the ingrowth of the adjacent parenchyma cells into thier cavities called tyloses. Which of theses are correct ?

ICSE-ANATOMY OF FLOWERING PLANTS -Test Your Progress (Fill in the blanks with appropriate words)
  1. Thin walled cells with much intercellular spaces and without pigments...

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  2. The fine cytoplasmic strands that interconnect the protoplasts of par...

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  3. The loose tissue formed by the lenticel phellogen towards the outside...

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  4. The age of a tree can be determined with the help of …………..

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  5. Hydathodes are ............. secreting glands.

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  6. Annual rings composed of greater amount of vessels with wider cavities...

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  7. The meristematic tissue developed in the extra-stelar region is ………..

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  8. Numerous vascular bundles are arranged in a scattered manner in monoc...

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  9. The chief function of velamen tissue is to .....

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  10. Roots arise .......... from the .......... cells.

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  11. Cambium of root is an example of ……….meristem

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  12. Bulliform cells are formed in the epidermis of ............ leaf.

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  13. Tyloses are found in ………….

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  14. The wood of teak is ……….... porous.

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  15. The vascular bundles having sclerenchymatous patches against the phlo...

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  16. The secondary protective tissue derived from cork cambium and replaci...

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  17. The portions of apical meristems which are separated from the axis an...

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  18. Cells of the tissue are living and show angular wall thickening. They...

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  19. A conjoint and open vascular bundle is observed in the transverse sec...

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  20. Phellogen and phellem respectively denote …………… and …………..

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