My Notes
Which among the following statements with respect to forewings of cockroach is incorrect?
(1) They are called as tegmina.
(2) They are opaque, leathery and dark.
(3) They arise from prothorax.
(4) They cover hindwings when at rest.
Complete the following statement by choosing the appropriate option:
The type of development in Periplaneta americana is ___________.
(1) Paurometabolous
(2) Holometabolous
(3) Hemimetabolous
(4) Incomplete
Tegmina are not-
(1) Mesothoracic
(2) Forewings
(3) Cover hindwings at flight
(4) First pair of wings
Tegmina are……… while hind wings are…………
(1) Opaque dark and leathery; transparent and membranous
(2) Transparent and membranous; Opaque and dark leathery
(3) Translucent dark and membranous; transparent and leathery
(4) Opaque and membranous; transparent and leathery
Select the correct sequence of organs in the alimentary canal of cockroach starting from mouth:
| 1. | Pharynx → Oesophagus → Ileum → Crop → Gizzard → Colon → Rectum |
| 2. | Pharynx → Oesophagus → Crop → Gizzard → Ileum → Colon → Rectum |
| 3. | Pharynx → Oesophagus → Gizzard → Crop → Ileum → Colon → Rectum |
| 4. | Pharynx → Oesophagus → Gizzard → Ileum → Crop → Colon → Rectum |
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