Question

Observe the relationship between the words and fill up the blanks with word having similar relationship.

(i) Haematoxylin : Haematoxylon campechianum ; Cork : ..............

(ii) Phellogen : Cork cambium ; .............. : cork

(iii) Ovule-funicle : Seed stalk ; Ovule-nucellus : ................

(iv) Brachysclereids : ........................... ; Osteosclereids : Prop cells

• A. Suberin, Phelloderm, Seed coat, Rod cells
• B. Quercus suber, Phellem, Perisperm, Stone cells
• C. Lignin, Phellogen, Endosperm, Rod cells
• D. Quercus suber, periderm, synergids, Stone cells

Answer 1

Answer:

B. Quercus suber, Phellem, Perisperm, Stone cells

• The cork oak (Quercus suber L.) is an evergreen oak that is characterized by the presence of a conspicuous thick and furrowed bark with a continuous layer of cork in its outer part.

• Phellem in the very outer portion of the outer bark. It often flakes off in plates or peels and is shed from the tree.

• Perisperm is a layer of nutritive tissue that surrounds the embryo of a seed.

• Stone cells (or sclereids) are sclerenchyma cells formed by the secondary deposition of lignin on the primary cell wall of parenchyma cells. Their development is closely related to the synthesis, transfer, and deposition of lignin.