Study the following and pick up the correct statements:
I. Opioids are obtained from Cannabis sativa
II. Heroin is obtained by the acetylation of Morphine
III. Barbiturates cause sleeplessness
IV. Benzodiazepines are tranquilizers
- Statement I is incorrect because opioids are not obtained from Cannabis sativa, which is mainly the source of cannabinoids.
- Statement II is correct because heroin is synthesized by acetylating morphine.
- Statement III is incorrect because barbiturates typically induce sleep, not sleeplessness.
- Statement IV is correct as benzodiazepines are indeed tranquilizers.
Assertion (A): Circulatory system of arthropods and molluscs is mainly open type.
Reason (R): Blood pumped out by the heart is circulated through a series of blood vessels in them.
Study the following and pick up the correct combinations:
S. No. | Phylum | Larva | Example |
---|---|---|---|
I | Annelida | Trochophore | Nereis |
II | Mollusca | Veliger | Periplaneta |
III | Hemichordata | Tornaria | Balanoglossus |
IV | Ctenophora | Dipluerula | Asterias |
Match the following:
A) Ornithorhynchus I) Flying fox
B) Pteropus II) Emu
C) Coracias III) Duck-billed platypus
D) Dromaeus IV) Parrot
V) Blue Jay
Match the following:
Match the following:
Assertion (A): Endosperm is haploid in Gymnosperms
Reason (R): Female gametophytic tissue acts as endosperm in Gymnosperms
In the following group of plants, sporophytes are dependent on gametophytes.
Match the following: