Multiple Choice QuestionsWhich one of the following groups of three animals each is correctly matched with their one characteristic morphological feature?
Liver fluke, Sea anemone, Sea cucumber - Bilateral symmetry
Centipede, prawn, sea urchin - Jointed appendages
Scorpion, spider, cockroach - Ventral solid central nervous system
Scorpion, spider, cockroach - Ventral solid central nervous system
The fruit is chambered, developed from inferior ovary and has seeds with succulent testa in
pomegranate
orange
guava
guava
Opening of floral buds into flowers, is a type of
autonomic movement of locomotion
autonomic movement of variation
paratonic movement of growth
paratonic movement of growth
In which of the following fruits is the edible part the aril?
Custard apple
Pomegranate
Orange
Orange
What type of placentation is seen in sweet pea?
Basal
Axile
Free central
Free central
D.
Free central
In sweetpea (Pisum sativum), the placentation is marginal, in which the placenta develops along the junction of two carpels, in a unilocular ovary. In basal placentation, the ovules are few or reduced to one and are borne at the base of ovary. e.g. compositae.
In axile placentation, margins of carpels fold inwards, fusing together in centre of ovary to form a single central placenta. Ovary is divided into as my locules, as there are carples e.g., Hibiscus, Asphodelus. Free-central placentation possesses a placenta arises as a central upgrowth from ovary base e.g. Stellaria.
Pentamerous, actinomorphic flowers, bicarpillary ovary with oblique septa, and fruit a capsule or berry, are characteristic features of
Asteraceae
Brassicaceae
Solanaceae
Solanaceae
Select the mismatch
Pinus – Dioecious
Cycas – Dioecious
Salvinia – Heterosporous
Salvinia – Heterosporous
Life cycle of Ectocarpus and Fucus respectively are
Haplontic, Diplontic
Diplontic, Haplodiplontic
Haplodiplontic, Diplontic
Haplodiplontic, Diplontic
In Bougainvillea thorns are the modifications of
Stipules
Adventitious root
Stem
Stem
The morphological nature of the edible part of coconut is
Perisperm
Cotyledon
Endosperm
Endosperm
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