Statement 1 : A simple leaf has undivided lamina.
Statement 2 : Leaves showing pinnate and palmate venations have various type of incisions.
Statement-1 and statement-2 are true and statement-2 is a correct explanation for statement -1.
Statement -1 and statement -2 are true but statement-2 is not a correct explanation for statement-1.
Statement-1 is true and statement-2 is false.
Both the statements are false.
Correct Answer :
B. Statement -1 and statement -2 are true but statement-2 is not a correct explanation for statement-1.
A leaf having a single or undivided lamina is called simple leaf. The lamina can have different types of incisions, which may reach upto half (-fid), more than half (-partite) or near the base or midrib (-sect). Depending upon the pinnate or palmate venation, the incisions are known as pinnatifid, palmatifid, pinnatipartite, palmatipartite, pinnatisect and palmatisect etc.
Related Questions
Match column I with column II and choose the correct combination from the options given below.
| (Position of floral parts on thalamus) | (Represented in) |
|---|---|
| A. Hypogynous | I. Ray florets of sunflower |
| B. Perigynous | II. Brinjal |
| C Epigynous | III Peach |
A II, B I, C III
A I, B II, C III
A III, B II, C I
A II, B III, C I
When a flower can be divided into two equal radial halves in any radial plane passing through the centre, it is known as
actinomorphic
zygomorphic
asymmetric
bisymmetric
Which of the following statements are correct about the leaf?
- Leaf is a lateral, generally flattened structure borne on the stem.
- It develops at the node and bears a bud in its axil.
- Leaves originate from root apical meristems and arranged in an acropetal order.
- They are the most important vegetative organs for reproduction.
(i) and (ii)
(ii) and (iii)
(i), (ii) and (iv)
all of these
Ginger is an underground stem. It is distinguished from root because
it lacks chlorophyll.
it stores food.
it has nodes and internodes.
it has xylem and vessels.
The main function(s) of root system is/are
absorption of water and minerals from the soil
storing reserve food material
synthesis of plant growth regulators
All of the above
Identify the different types of aestivation (A, B, C and D) in corolla and select the correct option.
A-Valvate, B-Twisted, C-Imbricate, D-Vexillary
A-Vexillary, B-Valvate, C-Twisted, D-Imbricate
A-Imbricate, B-Vexillary, C-Valvate, D-Twisted
A-Twisted, B-Imbricate, C-Vexillary, D-Valvate
Which one of the following structure is not associated with gynoecium?
Ovary
Style
Stigma
Filament
Read the following statements and answer the questions.
- Gynoecium is situated in the centre and other parts of the flower are located on the rim of the thalamus almost at the same level.
- Ovary is half-inferior.
- Examples are plum, rose and peach.
Which condition of flowers is being described by the above statements ?
hypogyny
perigyny
epigyny
none of these
Which of the following statement(s) is/are correct about calyx?
Calyx is the outermost whorl of the flower and are called sepals.
Sepals are green, leaf like and protect the flower in the bud stage.
The calyx may be gamosepalous (sepals free) or polysepalous (sepals united).
Both (a) and (b)
Aleurone layer helps in
storage of food in endosperm.
protection of embryo.
utilization of stored food.
all of the above.
Which of the following statement(s) is/are correct about venation?
(i) The arrangement of veins and the veinlets in the lamina of leaf is called venation.
(ii) Reticulate venation is the characteristic of monocots.
(iii) When the veinlets form a network, the venation is termed as reticulate venation.
(iv) When the veins run parallel to each other, within a lamina, the venation is termed as parallel venation.
Only (i)
Both (i) and (ii)
(i), (iii) and (iv)
All of these
Which one of the following statement is not correct?
Each stamen which represents the male reproductive organ consists of a stalk or a filament and an anther.
An actinomorphic flower can be dissected into two equal halves from any plane.
Superior ovary is found in hypogynous flowers.
When stamens are attached to the petals, they are epiphyllous as in brinjal.
Which of the following statements are correct?
- From the region of elongation, some of the epidermal cells form root hairs.
- Pneumatophores are seen in Rhizophora.
- Adventitious roots are seen in the banyan tree.
- Maize and sugarcane have prop roots.
(i) and (iv)
(i), (iii) and (iv)
(iii) and (iv)
(ii) and (iii)
In flower (X), the gynoecium occupies the highest position while the other parts are situated below it. The ovary in such flowers is said to be Y. Identify X and Y and select the correct option.
X - Epigynous, Y - Inferior
X - Perigynous, Y - Superior
X - Hypogynous, Y - Superior
X - Perigynous, Y - Half-inferior
The X is small and situated in a groove at one end of the endosperm. It consists of one large and shield shaped cotyledon known as Y and a short axis with a plumule and a Z. Identify X, Y and Z.
X - Scutellum, Y - Embryo, Z - Radicle
X - Embryo, Y - Scutellum, Z - Radicle
X - Scutellum, Y - Radicle, Z - Embryo
X - Radicle, Y - Embryo, Z - Scutellum
The mature seeds of plants such as gram and peas, possess no endosperm, because
these plants are not angiosperms.
there is no double fertilization in them.
endosperm is not formed in them.
endosperm gets used up by the developing embryo during seed development.
Which of the following option shows the correct labelling of the parts of leaf marked as A, B, C and D.
A - Lamina, B - Axillary bud, C - Stipule, D - Leaf base
A - Lamina, B - Stipule, C - Axillary bud, D - Leaf base
A - Lamina, B - Axillary bud, C - Stipule, D - Pedicel
A - Leaflet, B - Axillary bud, C - Stipule, D - Leaf base
The region of the root-tip whose cells undergo rapid elongation and enlargement and are responsible for the growth of the root in length is called the
region of maturation.
region of elongation.
region of meristematic activity.
root-hairs.
Stem tendrils are found in
cucumber
pumpkins
grapevines
all of these
Leaves of dicotyledonous plants possess _________ venation, while _________ venation is the characteristic of most monocotyledons.
reticulate and parallel
parallel and reticulate
reticulate and perpendicular
obliquely and parallel
Which of the following groups of plants have underground stems?
Potato, ginger, turmeric, Euphorbia, zaminkand
Potato, ginger, turmeric, zaminkand, Colocasia
Potato, Citrus, Opuntia, zaminkand, Colocasia
Potato, cucumber, watermelon, zaminkand, Colocasia
Identify the kind of phyllotaxy shown in the given figures A, B, and C.
A-Alternate, B - Opposite, C - Whorled
A- Whorled, B - Opposite, C -Alternate
A-Alternate, B - Whorled, C - Opposite
A-Whorled, B -Alternate, C - Opposite
Fibrous roots develop in maize from
upper nodes
lower nodes
upper internodes
none of these
Main function of leaf is
exchange of gases
increase the beauty of a tree
manufacturing of food
nerve impulse induction
A sterile stamen is known as
staminode
anther
pollen grain
filament
Which of the following is not the characteristic features of fabaceae?
Tap root system, compound leaves and raceme inflorescence.
Flowers actinomorphic, twisted aestivation and gamopetalous.
Stamens 10, introrse, basifixed, dithecous.
Monocarpellary, ovary superior and bent stigma.
Seeds are regarded as products of sexual reproduction because they
can be stored for long time.
are result of fusion of pollen tube.
are result of fusion of gametes.
give rise to new plants.
Which of the following is an example of pinnately compound leaf ?
Cucumber
Papaya
Cucurbita
Neem
The given figure shows the parts of flowering plant. Which parts of the given figure were involved in the following functions:
- Storing reserve food material
- Synthesis of plant growth regulators.
- Absorption of water and minerals from the soil.
- Providing a proper anchorage to the plant parts
5 and 6
1, 2 and 6
1, 2, 3 and 4
2, 4, 5 and 6
The given figure shows a typical structure of monocotyledonous seeds. Identify A, B, C, D and E parts marked in the given figures.
A - Endosperm, B - Embryo, C - Scutellum, D - Coleorhiza, E - Coleoptile
A- Embryo, B - Endosperm, C - Scutellum, D - Coleoptile, E - Coleorhiza
A - Endosperm, B - Embryo, C - Scutellum, D - Coleoptile, E - Coleorhiza
A - Embryo, B - Endosperm, C - Scutellum, D - Coleorhiza, E - Coleoptile