Q.1: The production of new plants from a single parent without the involvement of gametes is called ____________ reproduction.
Q.2: In sexual reproduction, new plants are obtained from existing plants through _________.
Q.3: Spirogyra reproduces by the method of ______________.
a) spore formation
b) vegetative propagation
Q.4: Bread mould has thread like projections called _______________.
Q.5: A ________ is the swollen underground stem of a plant which has stored food.
Q.6: Underground stems of ginger and turmeric are called ___________.
Q.7: The ______________ of mangrove plants develop into new plants.
Q.8: In ____________ method, stem with a bud is cut and planted in the moist soil.
Q.9: _____________ is a technique of raising new plants from a tiny portion of the plant tissue called explant on the culture of synthetic medium under aseptic conditions.
c) tissue culture
Q.10: Which of the following is a disadvantage of vegetative propagation ?
a) These plants need less attention.
b) They are unable to adapt in the changing environment.
c) It requires less time to mature and bear more fruits.
Q.11: ___________ are the reproductive parts of a plant.
Q.12: Pollen grains contain the __________ gametes.
Q.13: When the pollen grains from the anther of a flower are transferred to the stigma of that flower or another flower on the same plant, it is known as ____________________.
Q.14: Pollination in aquatic plants is carried out by ______________.
Q.15: The ovary of the flower swells and develops to form the ____________.
Q.16: The fertilised cell called ____________ forms when the male gamete fuses with the female gamete.
Q.17: What is the importance of dispersal of seeds ?
a) It helps the plants to grow in new places.
b) It prevents overcrowding of plants in an area.
Q.18: Seeds of ____________ have wings attached to them, which helps them to get dispersed by wind to far away places.
a) maple plant
Q.19: When a seed is sown, the _____________ develops first and moves into the soil forming the new root system.
Q.20: The baby plant is also known as ___________.
b) seed coat