Sets of reproductive terms are given below. Choose the set that
has an incorrect combination.
(a) sperm, testis, sperm duct, penis
(b) menstruation, egg, oviduct, uterus
(c) sperm, oviduct, egg, uterus
(d) ovulation, egg, oviduct, uterus
The size of the cells of an organism has no relation with the size of its body. Do you agree? Give reason for your answer.
Why do plant cells have an additional layer surrounding the cell membrane? What is this layer known as?
Cells consist of many organelles, yet we do not call any of these organelles as structural and functional unit of living organisms. Explain.
Fill in the blanks with the terms given in the box below:
Nucleus, chromosomes, cell wall, cell membrane, protoplasm, cytoplasm, ribosome, cell organelles
The outermost layer of plant cells is the (a) beneath which is the (b) . The term (c) refers to the jelly-like substance containing all the (d) . The (e) contains thread-like structures called (f) .
Read the following statements and write the appropriate term against each statement.
A. I control the functions of a cell. Who am I? ……………….
B. I am like a policeman. I do not allow anything and everything to get in and out of the cell. Who am I? ……………….
C. I transfer characters from parents to offsprings. Who am I?……………….
Is the following statement correct? If it is wrong, correct the
statement
Statement : “Unicellular organisms do not respire, only
multicellular organisms respire”
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