Biology - Structural Organization in Animals and Plants
Exam Duration: 45 Mins Total Questions : 30
Stems of hydrophytic plants are called
- (a)
stolon
- (b)
rhizome
- (c)
sucker
- (d)
offset
In Gloriosa superba (glory lily), the tendril is the modified form of
- (a)
axillary bud
- (b)
leaf
- (c)
leaf apex
- (d)
stipule
Hardbast occurs in the steam of Helianthus, Ricinus few other plants. This structure represents
- (a)
thin - walled patch of pericycle cells lying above the phloem
- (b)
thick - walled patch of pericycle cells lying above the phloem
- (c)
thick - walled patch of pericycle cells lying above the medullary rays
- (d)
unusually thickened cells of pholem
Buttress roots are found in
- (a)
Sorghum
- (b)
Banyan
- (c)
Terminalia
- (d)
Pandanus
Which of the following does not match?
- (a)
Ficus - Climbing root
- (b)
Stilt root - Zea mays
- (c)
Buttress root - Bombax
- (d)
Piper - Climbing root
Sugarcane plant has
- (a)
reticulate venation
- (b)
capsular fruits
- (c)
pentamerous flowers
- (d)
dumb bell shaped guard cells
In a dicotyledonous stem, the sequence of tissues from the outside to the inside is
- (a)
phellem 0 pricycle - endodermis - phloem
- (b)
phellem - phloem - endodermis - pericycle
- (c)
phellem - endodermis - pericycle - phloem
- (d)
pericycle - phellem - endodermis - phloem
Identify from the following a plant tissue, in which lignin does not occur in the cell wall
- (a)
collenchyma
- (b)
sclerenchyma fibres
- (c)
sclerid
- (d)
xylem
Eggs of cockroach are fertilised in
- (a)
fallopian tube
- (b)
ootheca
- (c)
genital pouch of female
- (d)
cocoon
Pineapple fruit develops from
- (a)
unilocular polycarpellary flower
- (b)
multipistillate syncarpous flower
- (c)
multilocular monocarpellary flower
- (d)
a cluster compactly born flowers on an axis
In earthworm, the circular muscles are highly developed in
- (a)
pharynx
- (b)
body wall
- (c)
gizzard
- (d)
typhlosole
Fruit of candytuft
- (a)
legume
- (b)
siliqua
- (c)
lomentum
- (d)
capsule
The water loss due to transpiration is prevented by
- (a)
Trichomes
- (b)
Cuticle
- (c)
Both (1) and (2)
- (d)
Subsidiary cells
A parenchyma cell has all functions except
- (a)
photosynthesis
- (b)
support to leaf petiole
- (c)
storage
- (d)
secretion
Vascular bundle with 2: 1 ratio of phloem and xylem is
- (a)
collateral
- (b)
Bicollateral
- (c)
radial
- (d)
closed
During water stress, the bulliform cells
(1) become turgid
(2) become flaccid
(3) make the leaves curl inwards
(4)make the leaf surface exposed
- (a)
1 and 3
- (b)
2 and 4
- (c)
1 and 4
- (d)
2 and 3
Excess of nutrients are connective into fats and are stored in
- (a)
cartilage
- (b)
adipose
- (c)
bone
- (d)
muscle
Select the incorrect statement w.r.t. the structure of a bone
- (a)
The matrix of bone is present in the form of layers called lamellae.
- (b)
Lamellae consists of fluid-filled spaces called lacunae.
- (c)
Lacunae contain bone cells called chondrocytes.
- (d)
The matrix is solid because of the presence of salts such as calcium phosphate.
What will happen, if the ligaments are cut or broken?
- (a)
No movement at the joint
- (b)
Bone will become unfix
- (c)
Bone will become fixed
- (d)
Bones will move freely at joints
Nature of mammary gland is
- (a)
apocrine
- (b)
merocrine
- (c)
holocrine
- (d)
none of these
In male cockroach, sperms are stored in
- (a)
Collaterial glands
- (b)
mushroom gland
- (c)
Genital chamber
- (d)
seminal vesicles
Which of the following kinds of venation is present in banana?
- (a)
Reticulate unicostate
- (b)
Reticulate multicostate
- (c)
Parallel unicostate
- (d)
Parallel multicostate
Cereals, castor and coconut possess_____________ seeds
- (a)
endospermic
- (b)
zoospermic
- (c)
non-albuminous
- (d)
none of these
Study the following statements regarding the anatomy of isobilateral leaf.
(i) Stomata are equally distributed on both the surfaces.
(ii) Certain adaxial epidermal cells are modified into bulliform cells in grasses.
(iii) The vascular bundles are radial.
(iv) Phloem is adaxially placed.
Which of the above statements are correct?
- (a)
(i) and (ii)
- (b)
(ii) and (iii)
- (c)
(ii) and (iv)
- (d)
All are correct
Consider the following statements (i)-(iii) and select the correct option stating which ones are true (T) and which ones are false (F).
(i) Keratinised stratified squamous epithelium covers moist surfaces like buccal cavity.
(ii) Fibroblasts store fat in adipose tissue.
(iii) Urinary bladder is lined by a stratified epithelium.
- (a)
(i) (ii) (iii) F T T - (b)
(i) (ii) (iii) T F F - (c)
(i) (ii) (iii) T F T - (d)
(i) (ii) (iii) T T F
Read the following statements and select the correct ones.
(i) In simple cuboidal epithelium, nuclei are rounded and lie in the centre of the cells.
(ii) Non-keratinised epithelium is impermeable to water.
(iii) Yellow elastic fibrocartilage makes cartilage flexible.
(iv) Areolar tissue forms a shock absorbing cushion around the eye balls and kidneys.
- (a)
(i) and (iii)
- (b)
(i) and (iii)
- (c)
(iii) and (iv)
- (d)
(ii) and (iv)
Assertion: Avicennia has pneumatophores.
Reason : Pneumatophores help the plant to get oxygen for respiration
- (a)
If both assertion and reason are true and reason is the correct explanation of assertion.
- (b)
If both assertion and reason are true but reason is not the correct explanation of assertion
- (c)
If assertion is true but reason is false.
- (d)
If both assertion and reason are false
Innumerable (many) vascular bundles, lack of combium and lack of a well demarcated pith is found in
- (a)
Sugarcane, Grass
- (b)
Sunflower, Neem
- (c)
Radish, Neem
- (d)
Pea, Peepal
A distinct monocot character shown by the flowers of Liliaceae is
- (a)
Hypogynous flowers
- (b)
Actinomorphic flowers
- (c)
Trimerous flowers
- (d)
Bisexual flowers
The youngest layer of secondary xylem in the wood of dicot plant is located
- (a)
Between pith and primary xylem
- (b)
Just outside vascular cambium
- (c)
Just inside vascular cambium
- (d)
Just inside cork cambium