Larval Form of Moth Produces Silk - Biology Assignment Help

Assignment Task:

Task:

https://byjus.com/neet/neet-biology-mcq/1. Pick the correct statement
(a) larval form of moth produces silk
(b) salivary glands of the moth produce silk
(c) by boiling, silk is extracted from cocoon of a moth
(d) both (a) and (c)
Answer: (d)
2. The silkworm larva ceases to eat and begins spinning silk all over its body
(a) from inside to outside
(b) from outside to inside
(c) in a random motion
(d) all of the above
Answer: (b)
3. This species produces silk of the superior quality
(a) Attacus atlas
(b) Bombyx mori
(c) Attacus ricini
(d) Antheraea assamensis
Answer: (b)
4. Silk is produced by
(a) cocoon
(b) adult moth
(c) larva
(d) larva and adult moth
Answer: (c)
5. This amongst the following produces silk
(a) butterflies
(b) Bombus mori
(c) Dysdercus koenigii
(d) Bombus indica
Answer: (b)
6. Insects not found in wild state is
(a) cochineal insect

(b) lac insect
(c) silk moth
(d) honey bee
Answer: (c)
7. Pick the set of beneficial insects to man
(a) sandfly, honey bee, butterfly
(b) honey bee, cockroach, silkworm
(c) silkworm, wasp, honey bee
(d) honey bee, cochineal insect, lac insect
Answer: (d)
8. Honey, silk and lac are
(a) artificial elements
(b) secretory substance of plants
(c) secretory substance of insects
(d) all of these
Answer: (c)
9. What is the life span of an adult ‘Bombyx mori’ ?
(a) 2 days
(b) 3-4 days
(c) 6 days
(d) 8 days
Answer: (b)
10. Silk contains a protein known as
(a) casein
(b) fibroin
(c) sericin
(d) both (b) and (c)
Answer: (d)
1. Sensor mechanism of spore dispersal is seen in
(a) Fern
(b) Selaginella
(c) Pinus
(d) Funaria

Answer: (d)
2. This is also referred to as bog moss
(a) Funaria
(b) Marchantia
(c) Sphagnum
(d) Riccia
Answer: (c)
3. In Funaria, the peristomial teeth are
(a) Xeric
(b) Hydric
(c) Mesic
(d) Hygroscopic
Answer: (d)
4. The reason why Funaria is a bryophyte is
(a) it is vascular
(b) absence of stems and roots
(c) the sporophyte is attached to the gametophyte
(d) all of these
Answer: (c)
5. In Funaria, the sporophytic phase is well-developed, comprising
(a) Foot and capsule
(b) Only capsule
(c) Spore sac
(d) Seta, foot and capsule
Answer: (d)
6. Rupturing of _________ causes the dehiscence of moss capsule
(a) Calyptra
(b) Annulus
(c) Persitome
(d) Operculum
Answer: (b)
7. From protonema, leafy gametophyte is formed in
(a) Funaria

(b) Riccia
(c) Marchantia
(d) Anthoceros
Answer: (a)
8. The least number of cells in a male gametophyte is found in
(a) Pinus
(b) Lilium
(c) Funaria
(d) Pteris
Answer: (b)

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