PPSC lecturer biology 2015 past paper mcqs solved
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Rhynia was discovered by:
- Robert Kidstone
- William H. Lang
- Robert Koch
- Both A and B
- " Rhynia gwynne-vaughanii was first described as a new species by Robert Kidston and William H. Lang in 1917. The species is known only from the Rhynie chert in Aberdeenshire, Scotland, where it grew in the vicinity of a silica-rich hot spring." Source: https://en.wikipedia.org › wiki › Rhynia
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Answer: D Explanation: -
Nucleoli seem to appear in:
- Prophase
- Metaphase
- Anaphase
- Telophase
- N/A
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Answer: D Explanation: -
How many types of tRNA are found in eukaryotic cell?:
- 60
- 45
- 20
- 64
- This question comes form federal book Fsc
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Answer: A Explanation: -
Inactive enzyme precursor such as pepsinogen for pepsin is called:
Zymogen
Apoenzyme
Holoenzyme
Both A and B
- N/A
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Answer: A Explanation: -
Which of the following tissue is involved in strenthening of plant body:
- Parenchyma
- Mesophyll
- Sclerenchyma
- Meristemetic
- N/A
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Answer: C Explanation: -
Sex linked genes refer to the genes?
- Present on sex chromosomes
- Present on autosomes
- Present in germ cells only
- Present in somatic cells only
- N/A
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Answer: A Explanation: -
Gastric digestion takes place efficiently in _____ medium:
- Acidic
- Basic
- Neutral
- Acidic or Basic
- N/A
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Answer: A Explanation: -
Which of the following sub cellular component is likely to be absent in plant roots?
- Chloroplast
- Ribosomes
- Nucleous
- Mitochondria
- N/A
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Answer: A Explanation: -
Which of the following is primery or transitional meristem?
- Apical Meristem
- Lateral Meristem
- Intercalary Meristem
- All of these
- N/A
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Answer: A Explanation: -
Cancer causing genes are:
- Oncogenes
- Suppressor genes
- Immunosuppressant genes
- ALB genes
- N/A
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Answer: A Explanation: