The polyphyletic grouping of organisms is based on:
Shared ancestral characteristics.
Homologous characteristics derived from a common ancestor.
Analogous characteristics due to convergent evolution.
A combination of ancestral and derived characteristics.
Related Questions
Which of the following are not characteristic features of Fabaceae?
Legume type of fruit
Presence of root nodules
Axile placentation
Leaves often compound
Which of the following is not a characteristic feature of Fabaceae?
Descendingly imbricate, ten stamens, diadelphous, ovary superior
Sepals five, gamosepalous, imbricate aestivation, placentation marginal
Monocarpellary, ovary superior, style long, slightly bent at the apex
Corolla, five petals, polypetalous, anterior one large and outermost
A plant is considered to possess all advanced morphological characters based on the evolutionary significance. Which one of the following sets of characters does the plant denote the same?
Dioecious condition, gamopetalous corolla and multiple fruit
Actinomorphic flowers, free stamens and endospermic seeds
Perennial life span, dichlamydous flower and simple fruit
Simple leaves, monoecious condition and apocarpous pistil
The feature not related to family Solanaceae is
Persistant calyx
Epipetalous condition of androecium
Swollen placenta
Incomplete flower with Perianth
Which of the following statements are true/false? I. Trimerous condition of floral whorl is characteristic of dicotyledons. II. Adiantum is also called walking fern. III.In gymnosperms, the vascular system consists of xylem without vessels and phloem with companion cells. IV. Riccia and Marchantia are liverworts.
I and II are true and III and IV are false
I and III and true and II and IV are false
I and IV are true and II and III are false
II and IV are true and I and III are false
Identify the INCORRECT statement regarding the standard petal of a papilionaceous corolla.
It is the largest petal.
It is also called the vexillum.
It overlaps the wings.
It is the smallest petal.
Which one of the following represents the floral characters of Poaceae?
Pedicellate, bracteates, bisexual, tetramerous, actinomorphic, complete and superior ovary
Pedicellate, bracteates, bisexual, pentamerous, zygomorphic, complete and superior ovary
Sessile, bracteates, bracteolate, incomplete, uni or bisexual, perianth modified into lodicules, stamens three, syncarpous, superior ovary and feathery stigma
Bracteate, unisexual, actinomorphic, stamens five and inferior ovary
A plant with actinomorphic and hypogynous flowers, heterochlamydeous perianth, dorsifixed and extrorse anthers dehiscing transversely belongs to
Coronariae
Bicarpellatae
Thalamiflorae
Calyciflorae
(A) The flowers of Liliaceae members are often trimerous
(R) The flowers of Liliaceae are with five whorls of perianth members
(A) and (R) are True, (R) is the correct explanation of (A)
(A) and (R) are True, (R) is the correct explanation of (A)
(A) is True but (R) is false
(A) and (R) are false
Which one of the following floral characters, is shared by Ruscus and ray florets of Tridax?
Nature of perianth
Unisexuality
Zygomorphy
Number of stigmas
