Basic Science Solutions for Class 8 Science

(a)Nerve cell (b)Muscle cell (c)Liver cell (d)Kidney cell

Q.2: The barrier between the protoplasm and the other environment in an animal cell is -

(a)Cell wall (b)Nuclear membrane (c)Tonoplast (d)Plasma membrane

Q.3: The term ‘Cell’ was given by -

(a)Leeuwenhoek (b)Robert Hooke (c)Flemming (d)Robert Brown

Q.4: Who proposed the cell theory? -

(a)Schleiden and Schwann (b)Watson and Crick (c)Darwin and Wallace (d)Mendel and Morgan

Q.5: A plant cell differs from an animal cell in the absence of -

(a)Endoplasmic Reticulum (b)Mitochondria (c)Ribosome (d)Centrioles

Q.6: Centrosome is found in -

(a)Cytoplasm (b)Nucleus (c)Chromosomes (d)Nucleolus

Q.7: The power house of a cell is -

(a)Chloroplast (b)Mitochondrion (c)Golgi apparatus (d)Nucleolus

Q.8: Within a cell the site of respiration (oxidation) is the -

(a)Ribosome (b)Golgi apparatus (c) Mitochondrion (d) Endoplasmic Reticulum

Q.9: Which is called ‘Suicidal Bag’?

(a)Centrosome (b)Lysosome (c)Mesosome (d)Chromosome

Q.10: Ribosomes are the center for -

(a)Respiration (b)Photosynthesis (c)Protein synthesis (d)Fat synthesis

Q.11: Double membrane is absent in -

(a)Mitochondrion (b)Chloroplast (c)Nucleus (d)Lysosme

Q.12: Cell organelle found only in Plant is -

(a)Golgi apparatus (b) Mitochondria (c)Plastids (d)Ribosomes

Q.13: Organisms lacking nucleus and membrane bound organelle are -

(a)Diploids (b)Prokaryotes (c)Haploids (d)Eukaryotes

Q.14: Animal cell is limited by -

(a)Plasma membrane (b) Shell membrane (c)Cell wall (d)Basement membrane

Q.16: Lysosomes are reservoirs of -

(a)Fat (b)RNA (c)Secretory Glycoprotein (d)Hydrolytic Enzymes

Q.17 Centrioles are associated with -

(a)DNA synthesis (b)Reproduction (c)Spindle formation (d)Respiration

Q.18: Main difference between animal cell and plant cell is -

(a)Chromosome (b)Ribosome (c)Lysosome (d) Endoplasmic Reticulum

Q.19: Animal cell lacking nuclei would also lack in -

(a) Chromosome (b) Ribosome (c) Lysosome (d) Endoplasmic Reticulum

Q.20: Plasmolysis occurs due to -

(a)Absorption (b)Endosmosis (c)Osmosis (d)Exosmosis

Q.21: A plant cell becomes turgid due to -

(a)Plasmolysis (b) Exosmosis (c) Endosmosis (d)Electrolysis

Q.22 Solute concentration is higher in the external solution -

(a)Hypotonic (b)Isotonic (c)Hypertonic (d)None of the above

Q.23: A cell placed in hypertonic solution will -

(a)Shrink (b)Show Plasmolysis (c)Swell up (d)No change in shape or size

Q.24: Which of the following organelle does not have membrane?

(a)Ribosome (b)Nucleus (c)Chloroplast (d)Mitochondria

Q.25: Root hair absorbs water from soil through -

(a)Osmosis (b)Active transport (c)Diffusion (d)Endocytosis

Q.26: Which cell organelle is not bounded by a membrane -

(a)Ribosome (b)Lysosome (c)ER (d)Nucleus

Q.27: Which of the following cellular part possess a double membrane?

(a)Nucleus (b)Chloroplast (c)Mitochondrion (d)All of the above

Q.28: Cell organelle that acts as supporting skeletal framework of the cell is -

(a) Golgi apparatus (b) Nucleus (c) Mitochondria (d) ER

Q.29: Plastids are present in -

(a)Animal cell only (b)Plant cells only (c)Both animal cells and Plant cells (d)Neither animal nor

plant cell

Q.30: Cell wall of plant is chiefly composed of -

(a)Hemicellulose (b)Cellulose (c)Phospholipids (d)Proteins

Q.31: Intercellular connections of plant cells are called -

(a)Middle lamella (b)Micro fibrils (c)Matrix (d)Plasmodesmata

Q.32: Genes are located on the -

(a)Chromosomes (b)Nucleolus (c)Nuclear membrane (d)Plasma membrane

Q.33: Chromatin consists of -

(a)RNA (b)DNA (c)RNA and histones (proteins) (d)DNA and histones (proteins)