List of top Environmental Sciences Questions on Plant and Animal Systematics

The viruses that possess oncogenes are mainly responsible for causing:
The acceptance or rejection of the pollen by a pistil is mediated by:
Which one of the following event can be considered highly evolved according to the theory of progressive sterilization of sporogenous tissue and sporophyte?

Match the structures with their taxa:

List IList II
A. Absence of Archegonia --- I. Pinus
B. Antherozoids with Cilia --- II. Gnetum
C. Resin duct --- III. Taxus
D. Aril --- IV. Cycas		I. Pinus
II. Gnetum
III. Taxus
IV. Cycas

The acceptance or rejection of the pollen by a pistil is mediated by:
According to Telome theory, the two sister branches of a telome showed unequal growth, and smaller branch developed into the leaf. This phenomenon is called:
The APG IV system of plant classification is based on:
Which of the following feature indicates the hydrophytic nature of Equisetum?
The correct sequence of classification of house mouse is:
Hypothalamus is present in which part of the brain?
Starch, the major product of photosynthesis in leaves, gets accumulated in:
Which among the following is/are false?
Statements:
A. Most conifers are monoecious, evergreen, and produce resin.
B. Cycads are dioecious.
C. There is one living species in the phylum Ginkophyta.
D. Gnetum shows the presence of two distinct archegonia in a female gametophyte.
E. Compositae family is known as Asteraceae.
Choose the correct answer from the options given below:
Bryophytes are divided into three distinct phyla. The liverworts belong to the phylum:
Match List I with List II:
LIST I (Species)LIST II (Number of chromosomes)
A. Triticum vulgareI. 18
B. Brassica oleraceaeII. 42
C. Arabidopsis thalianaIII. 4
D. Machaeranthera gracilisIV. 10
Choose the correct answer from the options given below:
Choose the correct statements:
Statements:
A. Many echinoderms are able to regenerate lost parts.
B. In many echinoderms, respiration and waste removal takes place by means of skin gills.
C. Sea urchins lack distinct arms but have the same five-part body plan as all other echino derms.
Choose the correct answer from the options given below:
Bone present in the thigh region of humans is known as: