Class 11 Biology · 18 questions · 0 with answers
A transverse section of stem is stained first with safranin and then with fast green following the usual schedule of double staining for the preparation of a permanent slide. What would be the colour of the stained xylem and phloem?
Match the followings and choose the correct option from below Column I Column II A. Meristem i. Photosynthesis, storage B. Parenchyma ii. mechanical support C. Collenchyma iii. Actively dividing cells D. Sclerenchyma iv. stomata E. Epidermal tissue v. sclereids Options:
Match the following and choose the correct option from below Column I Column II A. Cuticle i. guard cells B. Bulli form cells ii. single layer C. Stomata iii. waxy layer D. Epidermis iv. empty colourless cell Options:
Identify the simple tissue system from the following
Cells of this tissue are living and show angular wall thickening. They also provide mechanical support. The tissue is
Epiblema of roots is equivalent to
A conjoint and open vascular bundle will be observed in the transverse section of
Interfascicular cambium and cork cambium are formed due to
Phellogen and Phellem respectively denote
In which of the following pairs of parts of a flowering plant is epidermis absent?
How many shoot apical meristems are likely to be present in a twig of a plant possessing 4 branches and 26 leaves?
A piece of wood having no vessels (trachea) must belong to
A plant tissue, when stained, showed the presence of hemicellulose and pectin in cell wall of its cells. The tissue represents
In conifers fibres are likely to be absent in
When we peel the skin of a potato tuber, we remove
A vesselless piece of stem possessing prominent sieve tubes would belong to
Which one of the following cell types always divides by anticlinal cell division? a. fusiform initial cells b, root cap c. protoderm d. phellogen
What is the fate of primary xylem in a dicot root showing extensive secondary growth?