Multiple Choice QuestionsThe given figure shows L.S of the seed of maize. What do A, B, C and D represent?
A : endosperm, B : scutellum, C : plumule, D : coleoptile
A : scutellum, B : pericarp, C : radicle, D : coleoptile
A : endosperm, B : scutellum, C : radicle, D : coleorrhiza
A : scutellum, B : pericarp, C : plumule, D : coleorrhiza
C.
A : endosperm, B : scutellum, C : radicle, D : coleorrhiza
Endosperm is a tissue produced inside the seeds of most of the flowering plants following fertilization. It surrounds the embryo and provides nutrition in the form of starch.
Scutellum is a small structure shaped like a shield. It is also a modified cotyledon in the embryo of a grass seed.
Radicle is the part of a plant embryo that develops into the primary root.
Coleorhiza is a sheath protecting the root of a germinating grass or cereal grain.
Select the correct statement.
Acetobacter aceti produces citric acid
Saccharomyces cerevisiae is used as clot buster
Penicillium notatum restrict the growth of Staphylococci
Methanogens are found in aerobic conditions
Which of the following diseases is also called Christmas disease?
Sickle-cell anaemia
Haemoglobinuria
Myocardial infarction
Haemophilia- B
Which of the following is correct?
All fungi are filamentous.
Transfer of DNA from one bacteria to another bacteria cannot take place
Virus cannot have both DNA and RNA
Protists reproduce asexually only
What do A, B, C and D represent?
A- Infundibulum; B- Fertilization; C- Myometrium; D- Morula
A- Infundibulum; B- Fertilization; C- Endometrium; D- Blastocyst
A- Isthmus; B- Fertilization; C- Myometrium; D- Blastocyst
A- Isthmus; B- Fertilization; C- Endometrium; D- Morula
What is a plasmid?
Bacterial, linear, dsDNA
Extrachromosomal linear RNA
Extrachromosomal circular dsDNA
Autonomously replicating circular RNA
The concept of chemical evolution is based on
interaction of water, air and clay under intense heat
effect of solar radiation on chemicals
possible origin of life by combination of chemicals under suitable environmental conditions
crystallization of chemicals
Which of the following is a correct match between crop, variety and resistance to diseases?
| Crop | Variety | Resistance to diseases |
| Wheat | Himgiri | White rust |
| Brassica | Pusa sadabahar | Black rot |
| Cowpea | Pusa komal | Bacterial blight |
| Chilli | Pusa swarnim | Chilly mosaic virus |
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