Home
Class 11
BIOLOGY
Fill in the blanks : (i) ………….. bands...

Fill in the blanks :
(i) ………….. bands of muscle fibres are made up of protein myosin while ……………. bands are composed of actin.
(ii) …………… cells help in blood clotting.
(iii) ……………. sheath is found in myelinated nerve fibres.
(iv) Hyaline cartilage has matrix ............. and ........ .
(v) The large spherical or oval cells present in adipose tissue are ............. .

Text Solution

Verified by Experts

(i) Dark, light (ii) Blood platelets/thrombocytes (iii) Myelin (iv) Lacunae, chondroblasts (v) Adipocytes
Promotional Banner

Similar Questions

Explore conceptually related problems

Fill in the blanks : (i) A tendon attaches a …… to a ……… (ii) Pseudostratified epithelium lines the ……… tract while transitional epithelium lines the ……. tract. (iii) Dark bands of muscle fibres are made of the protein ….. While light bands are composed of .......... (iv) Nerve impulse comes to the cell body of a neuron along the .......... and goes away from the cell body along the ............ (v) Lacunae of bones house ......... while lacunae of cartilage contain ....... (vi) Tendon contains bundles of ........ fibres and rows of .......... cells between them.

Fill in the blanks : (i) In the group Protosomia, "….............." is deerived fromt eh blastopore of the embryo and "…..........." is formed at the opposite end. (ii) In the group Deuterostomia, "…............" develops from the blastopore of the embryo and the "..................." arises at the opposite end. (iii) Similarity in the arrangement of parts on the opposite sides of the body is termedas "................" . (iv) Animals like Hydra and Jellyfish depict "..................." symmetry whereas allvertebrates show "................." symmetry. (v) The structures projecting from the body of an animal for use in locomotion, feeding and some other purposes are called "..............." (vi) There is no digestive tract in Mesozoa and "................" . On the other hand , most "................" have a digestive tract. (vii) In ".............." and "..................." digestive tract has only single opening (mouth ) and is sait to be incomplete. (viii) Sponges develop from two germ layers and hence are termed "............." animals. They have "............" of organization. (ix) The digestive tract in coelenterates is "..................." and gastrovascular cavity acts as a "............." against which the contractile cells can work. (x) Jellyfishes and sea anemones belong to phylum "............." (xi) PhylumPlatyhelminthesis divided into three classes , Turbellaria, "............." and "............." . (xii) Trichinella (Trichina worm) is a cosmopolitan "............." paraste whereas Fasciola (liver fluke) lives in the bile ducts of the liver of "............" and ".............." . (xiii) Arthropods are commonly known as animals ".........." (xiv) Centripede belongs to class "................" while millipede belongs to class ".............."

How many of the following statements is/are correct? (i) Multipolar neurons have a single axon and multiple dendrites (ii) Unipolar neurons have a cell body with one axon only . (iii) The myelinated nerve fibres are enveloped with Schwann cells. (iv) The postsynaptic neurons are filled with neurotransmitter containing vesicles.

Given below is the diagrammatic sketch of a connective tissue . Identify the correct statement/s in relation to it : (i) it possesses a hard and non-flexible matrix. (ii) Matrix is filled with yellow elastin fibre . (iii) specialized cell related to this tissue are (iv) Repair capabilities are high.

Read the given statements and select the correct option. (i)Synaptic cleft of neurons secreates adrenaline. (ii)Myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon. (iii)Non-myelinated nerve fibre is enclosed by a Schwann cell that does not form a myelin sheath. (iv)Spinal and cranial nerves are made of non-myelinated nerve fibres.

Read the following statements and select the correct option (i) Blood cells secrete fibres of structural proteins called collagen and elastin (ii) Neuroglial cells protect and support the nephrons (iii) Osteocytes are present in spaces called lacunae (iv) Striated muscle fibres are bundled together in a parallel fashion (v) Biceps are involuntary and striated.