NEET Biology - Structural Organization in Animals and Plants
Exam Duration: 60 Mins Total Questions : 30
Pentamerous, actinomorphic flowers, bicarpillary ovary with oblique septa and fruit is a capsule or berry are charactersitic features of
- (a)
Asteraceae
- (b)
Brassicaceae
- (c)
Solanaceae
- (d)
Lilliaceae
Cardiac muscle fibres are
- (a)
striated involuntary
- (b)
striated voluntary
- (c)
non-striated involuntary
- (d)
non-striated voluntary
A spikate head is also termed as
- (a)
strobilus
- (b)
locusta
- (c)
capitate
- (d)
fascicle
Three types of flowers are usually found in
- (a)
spadix
- (b)
verticillaster
- (c)
head
- (d)
cyathium
Identify the correctly matched pair.
- (a)
Offset - Mint
- (b)
Stolon - Pistia
- (c)
Runner - Jasmine
- (d)
Sucker - Chrysanthemum
Read the following statements I and II.
I: | Many organs of aquatic plants float in water |
II: | Large air gaps are present in the collenchyma tissues of lotus leaf. |
Select the correct answer
- (a)
Statement I is correct and II is incorrect
- (b)
Statement II is correct and I is incorrect
- (c)
Statement I and II are correct
- (d)
Statement I and II are incorrect
The beneficial use of epidermal layer is
- (a)
bast fibre
- (b)
mesocarp
- (c)
cotton fibre
- (d)
jute
Which of the following throws its seeds as long as about 1463 cm away from it by explosive mechanism?
- (a)
Ruellia
- (b)
Bauhinia
- (c)
Lagerstroemia
- (d)
Arceuthobium
Ginger multiplies vegetatively by
- (a)
bud
- (b)
tuber
- (c)
stem
- (d)
rhizome
The longest segment in the leg of cockroach is
- (a)
coxa
- (b)
femur
- (c)
tibia
- (d)
trochanter
Ingluvial ganglion in cockroach is present on the surface of
- (a)
crpo
- (b)
gizzard
- (c)
brain
- (d)
None of these
Number of ovarioles in each ovary of cockroach is
- (a)
32
- (b)
16
- (c)
8
- (d)
4
Schistosoma is a parasite found in
- (a)
testes of frog
- (b)
liver
- (c)
intestine
- (d)
blood
Which one of the following plants develop pneumatophores?
- (a)
Monstera
- (b)
Euphorbia
- (c)
Rhizophora
- (d)
Bougainvillea
Tendrils are used for
- (a)
defence
- (b)
climbing
- (c)
offence
- (d)
traping
Consider the following statements regarding the root system of angiosperms.
I. In monocots, the fibrous root system arises from the base of the stem.
II. The region of elongation is called the root hair region.
III. In sweet potato the adventitious roots get swollen and store food.
IV.The stems of maize and sugarcane have supporting roots called prop roots.
- (a)
I and II are correct but III and IV are wrong.
- (b)
II and III are correct but I and IV are wrong.
- (c)
II and IV are correct but I and III are wrong.
- (d)
I and III are correct but II and IV are wrong.
The innermost layer of the cortex in dicot root is called as
- (a)
endodermis
- (b)
pericycle
- (c)
hypodermis
- (d)
bundle sheath
Which one of the following is not a constitutent of the stele?
- (a)
Endodermis
- (b)
Pericycle
- (c)
Pith
- (d)
Vascular bundles
In the mesophyll of the dicot leaf
- (a)
spongy parenchyma alone is present
- (b)
only palisade parenchyma present
- (c)
both spongy and palisade parenchyma are absent
- (d)
both spongy and palisade parenchyma are present
The wood which is lighter in colour, lower in density and helps in the conduction of water is called
- (a)
spring wood
- (b)
sapwood
- (c)
autumn wood
- (d)
heart wood
Cockroach has
- (a)
Two pairs of legs and one pair of wings
- (b)
Three pairs of legs and two pairs of wings
- (c)
Four pairs of legs and three pairs of wings
- (d)
Three pairs of legs and one pair of wings
Read the following statements and select the correct ones.
(i) Phloem parenchyma is absent in most monocots.
(ii) Gymnosperms lack tracheids and vessels.
(iii) Gymnosperms lack companion cells
- (a)
(i) and (ii)
- (b)
(ii) and (iii)
- (c)
(i) and (iii)
- (d)
(i), (ii) and (iii)
Vascular tissues of angiosperms differ from those of gymnosperms in
- (a)
presence of vessels in the xylem
- (b)
presence of well developed sieve tubes in phloem
- (c)
presence of companion cells in phloem
- (d)
all of these.
Maize grain is a fruit known as
- (a)
Cypsela
- (b)
Caryopsis
- (c)
legume
- (d)
achene
Given figures (I and II) show two specialised connective tissues. Identify the figures I, II and the parts labelled as A and B
- (a)
I II A B Cartilage Bone Collagen fibres Chondrocyte - (b)
I II A B Cartilage Bone Collagen fibres Chondroclast - (c)
I II A B Bone Cartilage Microtubules Osteoblast - (d)
I II A B Bone Cartilage Collagen fibres Osteoblast
Cardiac muscles are different from skeletal muscles as they are
- (a)
smooth
- (b)
voluntary
- (c)
non-striated
- (d)
involuntary.
Extra stelar secondary growth in dicot stem occurs due to the activity of
- (a)
Intrafascicular cambium
- (b)
Interfascicular cambium
- (c)
Vascular cambium
- (d)
Cork cambium
Zygomorphic flower occurs in
- (a)
Pea
- (b)
Gulmohur
- (c)
Cassia
- (d)
All of these
The epidermis in a dorsiventral leaf
(a) Covers both adaxial and abaxial surfaces
(b) Is not covered by cuticlec
(c) Bears more stomata on the upper side
(d) May even lack stomata on the upper side
Which of the above atatements are correct?
- (a)
(a) & (c)
- (b)
(b) & (d)
- (c)
(a) & (d)
- (d)
(b) & (c)
Besides phellem, phellogen, root periderm comprises of
- (a)
Secondary cortex
- (b)
Phelloderm
- (c)
Bark
- (d)
More than one option is correct