Heartwood differs from sapwood in
Absence of vessels and parenchyma
Presence of rays and fibres
Being susceptible to pests and pathogens
Having dead and non-conducting elements
Additional Questions
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The inner, darker and harder portion of secondary xylem that can not conduct water, in an older dicot stem, is called |
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Companion cells are closely associated with |
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The distinguishing character of imparipinnate leaf is that |
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The ovary is half inferior in flowers of |
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Which one of the following statements is correct? |
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The adventitious root which arises from the stem, penetrates into the soil, and helps support the stem is called |
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The fruit is chambered, developed from inferior ovary and has seeds with succulent testa in: |
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The most reduced stem is found in: |
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The part of root which grows in length |
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Identify a pair of the following plants which show modification of axillary buds into tendrils and hooks respectively: I. Hugonia II. Duranta III. Passiflora IV. Dioscorea The correct pair is: |
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