CHAPTER-5
GREEN PLANTS
AND CHORDATES
Text Book
Question and Answers
I.
Choose
the correct answer from those given, for the following questions.
1. Identify an example of red
algae from the following.
(a) Polysiphonia (b) Spirogyra (c) sargassum (d) ectocarpus
Answer: (a)Polysiphonia
2. The adult plant body is a
gametophyte in
(a) Angiosperms (b) pteridophytes
(c) gymnosperms (d) bryophytes
Answer: (d)bryophytes
3. Identify the feature exclusive
to monocots
(a) tap root system (b) fibrous
root system (c) reticulate venation (d) flowers with 4 or 5 petals
Answer: (b)fibrous root system
4. Among vertebrates, notochord is
(a) found only in
the anterior half (b) found only in the larval stage
(c) found throughout the body (d) replaced by a vertebral column
(c) found throughout the body (d) replaced by a vertebral column
Answer:
(d)replaced by a vertebral column
5. In reptiles the heart is
(a)
two chambered (b) incompletely four chambered (c) three chambered (d) four
chambered
Answer:
(c)three chambered
6. Identify the pair of oviparous
vertebrate groups where fertilization and development are both external
(a)
Fishes and amphibians (b) Reptiles and birds
(c)
Amphibians and reptiles (d) Birds and mammals
Answer:
(a)Fishes and amphibians
7. The skin in amphibians has
(a)An
exoskeleton of scales (b) No exoskeleton
(c)
an exoskeleton of hairs (d) an exoskeleton of feathers
Answer:
(b)No exoskeleton
8. Identify the odd one
(a)Calotes
(b)Salamander (c)chameleon (d)varanus
Answer:
(b)salamander
9. Aortic arch in birds is
(a)on
the right sides (b)on both the sides (c)on the left side (d)absent.
Answer:
(a)on the right sides
10. Identify the character not
found in mammals
(a)Enucleate
RBC (b)All similar teeth (c)viviparous condition (d)presence of mammary glands
Answer:
(b)All similar teeth
II.
Fill in the blanks with suitable words.
1. The
pigment responsible for red colour in red algae is phycoerythrin
2. Ulothrix
is an example of green algae
3. The
respiratory organs is fishes are gills
4. Among
reptiles, the heart is incompletely divided into four chambers only in crocodiles
5. Ichtyophis
is an example of limbless amphibian
III.
Name the following
1. Amphibian
of the plant kingdom – Bryophyta
2. Reproductive
structure in gymnosperms – cones
3. Membrane
separating thorox and abdomen in mammals – Diaphragm
4. An
aquatic hightless bird – penguin
5. The
largest lizard – varanus
IV.
Match the following
1. Mammalia
– whale
2. Aves-
ostrich
3. Reptilian
– tortoise
4. Amphibian
- newt
5. Pisces
– carp
V.
Answer the following questions
1. Make
a list of the salient features of brown algae.
·
Multi cellular with a flat plant body called
thallus
·
Cell wall is composed of cellulose and pectin
·
Cells are eukaryotic with a prominent nucleus
and many plastids
·
In addition to chlorophyll, xanthophyll is
present
·
Reproduce by vegetative, asexual and sexual
means
2. Explain
alternation of generation with reference to gymnosperm?
The process of
gametophyte and sporophyte being formed alternately during the life cycle is
called alternation of generation. In gymnosperms, the plant body is sporophyte
which produces prominent structure called cones.
3. Write
a brief note on cones in gymnosperms?
The plant body
is sporophyte, it produces structures called cones, there are female cones and
male cones. Male cones consists microsporophylls which produce microspores
containing male gamets. Female cones consists megasporophylls which produce
megaspores containing female gamets. The fusion product zygote becomes the
seed.
4. describe
the economic importance of ferns.
·
Ferns are grown for their ornamental value.
·
Leaves are used in making flower bouquet
·
Some ferns are of medicinal importance.
·
Some ferns like horse tail and club masses are
involved in the formation of fossil fuels like coal and petroleum
5. Distinguish
between monocots and dicots
Monocots
|
Dicots
|
They have single cotyledon
|
they have two cotyledons
|
Cotyledon remain below the soil
during germination
|
cotyledon appear above the soil
during germination
|
Leaves have parallel venation
|
leaves have reticulate venation
|
They have fibrous root system
|
they have tap root system
|
Vascular bundles are scattered
|
vascular bundles are in ring
|
6. Make
a list of the unique characters of phylum chordate?
·
Presence of a solid supporting structure on the
dorsal side of the body called notochord
·
Presence of a dorsal, hallow tubular nerve cord.
·
Presence of opening in the pharynx called gill
slits at least in the embryonic stages
7.
Make a list of any four unique features of
fishes
·
Streamlined body divisible into head trunk and
short tail
·
Exoskeleton composed of dermal scales
·
Locomotary structures are paired and unpaired
fins
·
Respiratory organs are in the form of gills
·
They are oviparous with fertilization and
development are external
8.
Name the major groups of reptiles with
examples for each?
Reptiles
are identified in four major groups
·
Chelones
eg- turtles and tortoises
·
Lizards eg- house lizard and chamaeleon
·
Snakes eg- cobra sea snake
·
Crocodiles and alligators
9.
Make a list of the main flight adaptations In
birds
·
The body is streamlined
·
The exoskeleton has epidermal outgrowths called
feathers which in s help in flight
·
Locomotor structures are pentadactyl forelimbs
and hind limbs
·
Fone limbs are modified into wings for flying
10. Give
an example for each of the following
a. Flyling
mammal – bats
b. Largest
animal – blue whale
c. Egg
laying mammal- platypus
d. Pouched
mammal – kangaroo
e. Largest
land animal – elephant
f. Carnivorous
mammal- lion
g. Herbivorous
mammal- Horse
h. Primate
– monkey
Additional questions
1) Name
the multi cellular algae? Name the pigment present in each?
Red algae, brown
algae and green
a.
Red algae – in addition to chlorophyll, a red pigment
called phycoerythrin is present
eg. Batrochospermum and polysiphonia
b.
Brown algae- in addition to chlorophyll a brow pigment xanthophyll is present
eg- sargassum and ectocarpus.
c.
Gree algae – green pigment called chlorophyll is
present
eg. Spirogyra and ulothrix
2) Name
two green algae which are unicellular?
Chlorella
and chlamydo monas
3) What
are sea weeds?
The
largest and most complex forms of algae which are marine called sea weeds. Eg.
Saragassum
4) What
are kelps?
The
largest algae which grow about 60m in length are called kelps eg. Microcystus
5) What
is thallus?
The
plant body in algae is called thallus
6) Make
a list on uses of algae?
·
Used in manufacture of cattle feed
·
Brown algae used in preparation of ice creams
and chocolates
·
Red algae is used for culturing bacteria in
laboratory
·
It helps I purification of water
7) Explain
reproduction in algae?
·
Algae reproduce by vegetative, a sexual and
sexual means vegetative reproduction occurs by fragmentation of thallus
·
A sexual by the formation of spores
·
Sexual reproduction by the fusion of male and
female gamets
8) What
are rhizoids?
Small
unicellular root like extensions present in bryophytes are called rhizoids
9) Name
the amphibians of the plant kingdom?
Bryophytes.
10) Name
the two types in bryophytes?
·
Liver worts
eg:riccia
·
Mosses
eg:funaria
11) What
is meant by alternation of generation in bryophytes?
The process of
gametophyte and sporophyte being termed alternately during life cycle is called
alternation of generation.
12) Differentiate
between gametophyte and sporophyte of bryophytes
Gametophyte
|
sporophyte
|
Gametophyte is produce gametes
|
sporophyte
produce spores
|
They are large in size
|
they are smaller in size
|
They manufacture food with the help of chloroplast
|
They depend
upon gametophyte for their food
|
13) Write
the economic importance of bryophytes
·
Mosses are used in packing flowers
·
Mosses are used in pots for. moisture retention
·
Since mosses forma dense mat on the soil. They
check erosion
·
Bryophytes can decompose the rocks and
contribute to soil formation.
14) Why
are pteridophytes called tracheophytes?
Pteridophytes
have vascular tissues xylem and phloem to transport water and food hence it is
also called tracheophytes
15) What
is prothallus?
The
gametophyte is small but is an independent structure called prothallus
16) Write
the economic importance of pteridophytes?
a. Ferns
are grown for their arnamental values
b. Leaves
are used in making flower bouquet
c. Some
ferns are of medicinal importance
d. Some
ferns involved in the formation of fossil fuel.
17) Give
two examples for pteridophytes?
Nephrolepis,
selaginella, Adiantum etc.
18) What
are gymnosperms? Give two example?
The
plants in which seeds are not enclosed by fruits are called gymnosperms
Eg:
cycas and pinus
19) What
are angiosperms? Give two examples?
The
plants in which seeds are enclosed by fruits are called angiosperms
Eg-
mustard and maize
20) What
is inflorescence?
A
special branch bearing a cluster of flower is called inflorescence.
21) Write
the difference between fibrous root system and tap root system
Fibrous root
system
|
Tap root
system
|
Monocot plants have fibrous root
system
|
Dicot plants
have tap root system
|
Primary root is short lived
|
Primary root continues to grow through
life
|
Roots develop from the base of the
stem
|
Produce many secondary and tertiary
branches
|
22) Name
the classification of fishes with an example?
1.
Cartilaginous fishes
Only
cartilages are found in the endoskeleton Eg: sharks and ray fishes
2.
Bony fishes
Endoskeleton
is composed of bones.
Eg:
Hippo campus and carp
23) Write
the economic importance of class pisces
1.
Rearing fishes for human food
2.
Liver of sharks and cods is rich in vitamin A and D
3.
Dried skin of shark is used in making polishes
4.
gambusia are used in biological control of mosquitoes
24) Name
only four salient features of amphibian?
The
body is divisible into head, trunk and tail. There is no exo skeleton skin is
moist and smooth locomotor structrures are in the form of a pair of forelimbs
and a pair of hind limbs
Respiratory
organs are gills in larva and pair of lungs in adult
25) Explain
oviparous and viviparous condition?
Oviparous:
animals which lay eggs are called oviparous
In
oviparous both fertilization and development may be external
Viviparous:
animals which lay eggs are called viviparous
In
viviparous both fertilization and development may be internal
26) What
are cold blooded (poikilothermic) and warm blooded (homeothermic) condition?
Cold
blooded; vertebrates that keep changing their body temperature according to
be changes in the environment are called cold blooded animals
Warm
blooded: vertebrates that maintain a constant body temperature irrespective
of changes in the environment temperature are called warm blooded animals
27) Name
the classification of birds with an example?
Flying
birds
Eg:
Parrot and pigeon
Flightless
birds
Eg:
Ostrich and kiwi
28) Write
the important of features in birds?
a. Feathers
provide protections
b. Maintain
body temperature
c. Help
in light
d. Attempting
the opposite sex
29) Name
only four salient features of Mammalia?
a. The
body is divisible into head trunk and tail
b. The
exoskeleton is represented by epidermal outgrowths called hairs
c. Respiratory
organs are a pair of lungs
d. Heart
is four chambered aortic arch is on left side
e. Mammary
glands are present in females secrete milk to nourish the young one.
30) What
are pneumatic bones?
The
bones of birds which are hallow, light and filled with air are called pneumatic
bones
31) What
is meta morphism?
The
changes which a larva undergoes in order to become adult are collectively
called as metamorphism
32) What
is pisciculture
Rearing
fishes for human food is called pisciculture
33) What
is noto chard
A
solid supporting structure on the dorsal side of the body is called noto chord
34) Important
diagrams to learn
1.
Parts of a flower
2.
Monocot and dicot plant
3.
External features of fish
4.
Life cycle of frog.
3 Comments
thanku for these questions but please put fill in the blanks if u Can.
ReplyDeleteplease put some examples for monocots and dicots sedds
ReplyDeleteYa it is actually great and help thanks....
ReplyDelete