Reproduction in plants

1. Which of the following parts of a plant take part in sexual
reproduction?
(i) Flower
(ii) Seed
(iii) Fruit
(iv) Branch
Choose the correct answer from below.
(a) (i) and (ii)          (b) (i), (ii) and (iii)
(c) (iii) and (iv)       (d) (ii), (iii) and (iv)
2. Lila observed that a pond with clear water was covered up with
a green algae within a week. By which method of reproduction
did the algae spread so rapidly?
(a) Budding
(b) Sexual reproduction
(c) Fragmentation
(d) Pollination
3. Seeds of drumstick and maple are carried to long distances by
wind because they possess
(a) winged seeds
(b) large and hairy seeds
(c) long and ridged fruits
(d) spiny seeds
4. The ‘eye’ of the potato plant is what
(a) the root is to any plant.
(b) the bud is to a flower.
(c) the bud is to Bryophyllum leaf.
(d) the anther is to stamen.
5. The ovaries of different flowers may contain
(a) only one ovule
(b) many ovules
(c) one to many ovules
(d) only two ovules
6. Which of the following statements is/are true for sexual
reproduction in plants?
(i) Plants are obtained from seeds.
(ii) Two plants are always essential.
(iii) Fertilisation can occur only after pollination.
(iv) Only insects are agents of pollination.
Choose from the options given below.
(a) (i) and (iii)         (b) (i) only
(c) (ii) and (iii)        (d) (i) and (iv)
7. Pollination refers to the
(a) transfer of pollen from anther to ovary.
(b) transfer of male gametes from anther to stigma.
(c) transfer of pollen from anther to stigma.
(d) transfer of pollen from anther to ovule.


Fill in the blanks with correct terms.
The male and female gametes fuse to form a _____(a)______during the process of _____(b)______. This grows into an
_____(c)______ which is enclosed within a seed. After fertilisation the ovules develop into _____(d)______ and the ovary develops
into a _____(e)______ .

Class 7 Transportation in animal and plants

MCQ

1. The muscular tube through which stored urine is passed out
of the body is called –
(a) kidney
(b) ureter
(c) urethra
(d) urinary bladder
2. They are pipe-like, consisting of a group of specialised cells.
They transport substances and form a two-way traffic in plants.
Which of the following terms qualify for the features mentioned
above?
(a) Xylem tissue
(b) Vascular tissue
(c) Root hairs
(d) Phloem tissue
3. The absorption of nutrients and exchange of respiratory gases
between blood and tissues takes place in –
(a) veins
(b) arteries
(c) heart
(d) capillaries
4. In which of the following parts of human body are sweat glands
absent?
(a) Scalp
(b) Armpits
(c) Lips
(d) Palms
5. In a tall tree, which force is responsible for pulling water and
minerals from the soil?
(a) Gravitational force
(b) Transportation force
(c) Suction force
(d) Conduction force
6. Aquatic animals like fish excrete their wastes in gaseous form as
(a) Oxygen
(b) Hydrogen
(c) Ammonia
(d) Nitrogen


Fill in the blanks of the following paragraph using just two
words – arteries and veins.
___(a)___ carry oxygen-rich blood from the heart to all parts of
the body and ___ (b)___ carry carbon dioxide-rich blood from
all parts of the body back to the heart. ___ (c)___ have thin
walls and __ (d)___ have thick elastic walls. Blood flows at high
pressure in ___ (e)____. Valves are present in __ (f) ___ which
allow blood to flow only towards the heart. __ (g)___ divide into
smaller vessels. These vessels further divide into extremely
thin tubes called capillaries. The capillaries join up to form
____ (h)_____.