BIOLOGY
1. First living cells were observed by
A) Robert Hooke B) A.V Leeuwenhoek C) Robert Brown D) R.Virchow
2. Well defined nucleus is absent in
A) Plant cell B) Animal cell C) Eukaryotic cell D) Prokaryotic cell
3. Which of the following is incorrect pair
A) Nucleus-Brain of the cell B) Mitochondria-Power house of the cell C) Chloroplast-Kitchen of the cell D) Lysosome-Secretory granules
4. Chlorophyll is present in
A) Stroma B) Matrix C) Thylakoid D) None of these
5. Ribosomes are made up of
A) RNA B) Proteins C) Lipoproteins D) Both (A) and (B)
6. Which of the following is absent in plant cell
A) Vacuole B) Centriole C) Cell membrane D) None of these
7. In meiosis crossing over takes place during
A) Leptotene B) Zygotene C) Pachytene D) none of these
8. The first division of meiosis is
A) Equational B) Reductional C) Both (A) and (B) D) None of these
9. Which plant material is best suited for the study of meiosis
A) Root tip B) Anther C) Shoot apex D) None of these
10. How many mitotic divisions must occour in a cell of a root tip to form 128 cells?
A) 128 divisions B) 127 divisions C) 7 divisions D) None of these
11. Colourless plastids are known as A) Leucoplast B) Chromoplast C) Chloroloplast D) None of these
12. Which of the following is the largest cell organelle present in the plant cell?
A) Mitochondria B) Plastid C) Nuleus D) E.R.
13. The term mitosis was coined by
A) R. Virchow B) W.Flemming C) Farmer&Moore D) None of these