In stems, the protoxylem lies towards the centre and the metaxylem lies towards the periphery of the organ. This type of primary xylem is called:

• Xylem fibres

• Xylem parenchyma

• Exarch

• Endarch

................. is the second largest animal phylum.

• Mollusca

• Chordata

• Coelomates

• Annelida

Which of the following is one of the commercial products obtained from Gelidium and Gracilaria and are used to grow microbes and in preparations of icecreams and jellies?

• Agar

• Chlorella

• Spirullina

• Gymnosperms

Lion, Leopard and Tiger are all species of which genus?

• Solanum

• Panthera

• Felis

• Tigris

Presence of large amounts of nutrients in waters also causes excessive growth of ......algae.

• Biomagnification

• Algal bloom

• Planktonic

• Eutrophication

In the names Mangifera indica (mango), Solanum tuberosum (potato) and Panthera leo (lion), the terms Mangifera, Solanum and Panthera represent the higher level of?

• Taxon

• Taxonomic Hierarchy

• Specific Epithet

• Binomial Nomenclature

............ are made up of sclerenchymatous cells. These are generally absent in the primary phloem but are found in the secondary phloem.

• Xylem fibres

• Xylem parenchyma

• Phloem parenchyma

• Phloem fibres

Other name of Platelets is

• Leucocytes

• Erythorocytes

• Platelets

• Thrombocytes

Taenia (Tapeworm), Fasciola (Liver fluke) are examples of which phylum?

• Coelenterata

• Platyhelminthes

• Annelida

• Arthropoda

What type of a body plan does coelenterates, ctenophores and echinoderms have?

• Annelida

• Radial

• Bilateral

• Platyhelminthes