Number of spiracles found in cockroaches are?
The tracheal or respiratory system in cockroaches opens to the outside through the slit-like openings, referred to as the stigmata... View Article
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Which of the given is an ex-situ conservation strategy of biodiversity?
Seed bank Wildlife sanctuary National parks Sacred groves Ex situ is the method of conserving all the living species in... View Article
The guard cells become turgid at the time of opening of stomata due to?
Stomata are small pores found on leaves involved in the regulation of water and gas exchange carried out by closing... View Article
Which one of the following is not a limitation of ecological pyramids?
Saprophytes are not given any place in ecological pyramids even though they play a vital role in the ecosystem It accommodates... View Article
The conducting cells of xylem are?
Companion cells Tracheary elements Sieve elements All of these The companion cells on the other hand are special parenchyma cells... View Article
Key is a taxonomic aid for the identification of specimens. Each statement in key is called a?
Lead Couplet Both A and B None of these Key are taxonomical aids utilized to identify species on the basis... View Article
Soil required for wheat cultivation is?
Wheat cultivation requires enough if not less water for its growth. Additionally, it also necessitates enough sunshine and warm temperatures.... View Article
y gene in lac operon codes for?
Lac operon is the operon or a cluster of genes having one promoter encoding genes for the metabolism and transport... View Article
Ploidy of the central cell of the embryo sac?
Ploidy refers to the number of sets of chromosomes contained in the cells. The nucellus forms the central part of... View Article
How polyembryony can be commercially exploited?
Polyembryony is the presence of more than one embryo in the seed. Hence, as a result, more than one embryo... View Article
Static concept of species was proposed by?
The static concept of species or the morphological concept of species was proposed by Carolus Linnaeus. As per Linnaeus, species... View Article
In gymnosperm the pollen chamber represent?
Microsporangium in which pollen grains develop A cavity in the ovule in which pollen grains are stored after pollination A... View Article
Cell wall of sclerenchymatous fibres and sclereids are respectively thickened by?
Lignin, lignin Lignin, cellulose Cellulose, hemicellulose Cellulose, cellulose Fibers are elongated, thick walled having pointed cells. Typically, these occur in... View Article
The enzyme which helps to cut one strand of DNA duplex to release tension of coiling of two strands is?
Topoisomerase DNA ligase Helicases or unwindases DNA Polymerase I Topoisomerase – this enzyme cuts one strand of DNA duplex to... View Article
ABO blood group is an example of?
The ABO blood group system is the categorization of the human blood on the basis of the inherited attributes of... View Article
Lactose is made up of alpha or beta glucose?
Milk sugar or lactose is a reducing sugar. It is a disaccharide that is obtained from the condensation of glucose... View Article
What is not true about hotspots?
India has three hotspots Total hotspots are 34 Hotspots contain high density of megadiversity Total area covered by hotspots is... View Article
s phase marks the phase of.
S phase or the Synthesis Phase is that stage of the cell cycle wherein DNA replication takes place, between the... View Article
Select the incorrect statement regarding imbibition.
Water is absorbed by germinating seeds through imbibition. The liquid which is imbibed is called imbibate. Imbibition is the phenomenon... View Article
Underground rhizome is a common mode of reproduction in?
Mint Chrysanthemum Banana All of these Rhizomes are the main stems of the plant, running underground horizontally and growing continuously.... View Article
