MEDIUM
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Sponge show radial symmetry.
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Important Questions on Structural Organisation in Plants
MEDIUM
Among the members of the list given below, how many plants have superior ovaries?
China rose, mustard, brinjal, potato, guava, cucumber, onion and tulip.
MEDIUM
Which of the following flowers is unisexual?
EASY
The standard petal of the papilionaceous corolla is also called:
EASY
Free central placentation is not present in:
MEDIUM
Match Column - I with Column - II and select the correct option using the codes given below:
| Column–I | Column–II |
| a. Pistils fused together | (i) Gametogenesis |
| b. Formation of gametes | (ii) Pistillate |
| c. Hyphae of Ascomycetes Fungus | (iii) Syncarpous |
| d. Unisexual female flower | (iv) Dikaryotic |
EASY
Match the species in Column-I with their respective feature of body organisation in Column-II
| Column-I | Column-II | ||
| P | Mollusca | i | Pseudocoelom |
| Q | Annelida | ii | Radula |
| R | Nematoda | iii | Radial symmetry |
| S | Echinodermata | iv | Segmentation |
Choose the CORRECT combination.
HARD
Ovaries of four different plants and show variation in the position of ovules as stated below
On central axis without septa
On the inner wall of ovary
On the ridge along the ventral suture
At the base of the ovary
Identify the and plants respectively
EASY
Free-central placentation is found in
EASY
Radial symmetry is found in the flowers of
EASY
Epipetalous and syngenesious stamen occurs in:
EASY
Perigynous flowers are found in:
MEDIUM
Study the following lists. Match the floral parts given in List - I with the corresponding symbols, in List - II
| List - I | List - II | ||
| (a) | Calyx | (i) | |
| (b) | Ovary superior | (ii) | |
| (c) | Actinomorphic | (iii) | |
| (d) | Zygomorphic | (iv) | |
| (v) |
The correct answer is
EASY
How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, mustard, groundnut, radish, gram and turnip have stamens with different lengths in their flowers?
EASY
Example for a monodelphous androecium is
HARD
Match the following lists:
| List | List | ||
| A) | Branches of limited growth modified for photosynthesis | Cashew | |
| B) | The peduncle is branched with one branch each time | Asparagus | |
| C) | Multicarpellary, syncarpous unilocular ovary, stony pericarp | Hamelia | |
| D) | Placenta is axial and ovules are attached to multilocular ovary | Colocasia | |
| Lemon |
MEDIUM
Identify the respective formula of the gynoecium from which fruits like Berry, Pepo, Hesperidium and Pome are developed
MEDIUM
The flowers are zygomorphic in:
(a) Mustard
(b) Gulmohar
(c) Cassia
(d) Datura
(e) Chili
Choose the correct answer from the options given below:
EASY
The hilum is a scar on the:
EASY
Proximal end of the filament of stamen is attached to the:
