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Chapter 9 Kingdom Plantee Biology 11th Class Punjab Short Questions

Question No. 1 - Define protandrous.

Answer No. 1 - When an organism develops male sex organ and gametes earlier than female sex organ or gametes it is called protandrous.

Question No. 2 - Differentiate between parazoa and metazoa.

Answer No. 2 - Parazoa : These animals lack tissues organised into organs and have intermediate shape and are asymmetrical.

Question No. 3 - How sponges reproduce asexually?

Answer No. 3 - Sponges reproduce by budding. The buds may be internal or external; the internal buds are cared gemmules. Both type of buds develop into are sponge.

Question No. 4 - Give two parasite adaptation of Platyhelminthes.

Answer No. 4 - Two parasite adaptations are:
1. Reduced digestive system
2. Highly developed reproduction system

Question No. 5 - How reproduction occur in platyhelminthes?

Answer No. 5 - The platyhelminthes reproduce both sexuallt as well as asexually. Asexually reproduction is by fission in which the animal constricts in the middle into two pieces, each of which regenerates its missing part. The sexually reproducing species are hermaphrodite.

Question No. 6 - Differentiate between corals and coral reefs.

Answer No. 6 - Corals: Corals are formed from the secretion produced by specialized polyp that are present in certain coelenterates.

Question No. 7 - What is metameric segmentation? In which phylum it is present?

Answer No. 7 - The body becomes divided transversely into number of similar parts or segments. This is called metameric segmentation. It is found in annelids.

Question No. 8 - Name three classes of phylum annelids.

Answer No. 8 - 1. Class Polychaeta
2. Class Oligochaeta

Question No. 9 - What is importance of sponges?

Answer No. 9 - Sponges have following importance:
1. They are used as sound absorber.
2. They are used in surgery to absorb blood and fluid.
3. They are used for washing and bathing.

Question No. 10 - Give any two parasitic adaptation of flatworms.

Answer No. 10 - They have highly developed reproductive system.
Their digestive system is properly developed or OS on degenerative form.

Question No. 11 - What are harm caused by insects?

Answer No. 11 - Many types of mosquito, flies, fleas, lice and bugs transmit disease causing organisms to men. Some are as follow.
Females of genus anopheles mosquito transmits plasmodium that cause malaria in men. The teste fly of African countries transmit trypanosoma, the cause of ing sickness and skin disease. Some insects damage crops. Some insects like wasps can sting or bite to human.

Question No. 12 - What is pseudoelom?

Answer No. 12 - In members of phylum platyhelminthes, the space between the body wall and the digestive tube is called pseoudo coelom.

Question No. 13 - What are hermaphrodite animal?

Answer No. 13 - An organism having both sex organs in it is said to be hermaphrodite or bisexual.

Question No. 14 - Differentiate between diploblastic and triploblastic animals.

Answer No. 14 - Diploblastic : These animals have two germinal layers i.e ectoderm and endoderm.

Question No. 15 - Write down the scientific name of pinworm and hookworm?

Answer No. 15 - Scientific name for hookworm is Ancylostoma duodenale and for pinworm is Enterobius vermicularis.

Question No. 16 - Give salient features of Myriapods and phylum arthropoda.

Answer No. 16 - Nymph: It is a stage of incomplete metamorphosis, in which new born resembles to adult but it do not has reproductive organs and wings.
Metamorphosis: Arthropods passes through developmental changes before reaching the adult stage, this process is called metamorphosis.

Question No. 17 - Name four harmful effects of insect.

Answer No. 17 - Harmful insect include Anopheles mosquito, House fly, Tsetse fly, Aphids.

Question No. 18 - Differentiate between spiral and radial cleavage.

Answer No. 18 - Spiral Cleavage: Cleavage is that in which lines or planes cleavage are not symmetrical between poles instead are diagonal to the polar axis and produce unequal cells around the axis of polarity. The fate of blastomeres is foretold.

Question No. 19 - Write two basic forms of Cnidarians.

Answer No. 19 - The two basic forms of coelenterates are polyp and medusa.

Question No. 20 - What is coelom?

Answer No. 20 - Coelom is cavity present between the body wall and the alimentary canal and is lined by mesoderm.

Question No. 21 - Give two example of sponge.

Answer No. 21 - Sycon, Leucosolenia, Spongila.

Question No. 22 - Compare infestation with disinfestation.

Answer No. 22 - infestation : Process of entering and causing infection in the host body by the parasite is called infestation.

Question No. 23 - What are gemmules?

Answer No. 23 - In sponges asexual reproduction takes place by budding. Buds may be internal or external.The internal buds are called gemmules.

Question No. 24 - How coral reefs are formed? Give their importance.

Answer No. 24 - Coolenterates are called corals. Living polyps are found on the surface layers of corals wheares underneath the masses are dead stoney structure only and there are no polyps inside. The stoney mass formed is called corals,

Question No. 25 - Differentiate between polyp and medusa.

Answer No. 25 - Polyp is sessile living and asexually reproducing of phylum and coelenterata.

Question No. 26 - What are triploblastic animals?

Answer No. 26 - Triploblastic animals are included in phyla which have been places in grade bilateria. The body of these animals is made from three layers ectoderm, mesoderm and endoderm.

Question No. 27 - Differentiate between Coelomates and Acoelomates.

Answer No. 27 - Acoelomates: In phylum platyhelminthes there is no body cavity or coelom and mesoderm from a loose cellular tissue called mesenchyma or parenchymal which fills the space between ectoderm and endoderm.

Question No. 28 - Differentiate between ostia and osculum.

Answer No. 28 - Ostia : In sponges numerous pores are present through these pores water enters in the body of sponges.

Question No. 29 - Differentiate between schizocoelous and enterocoelous coelome.

Answer No. 29 - Schizocoelous coelom: Coelom found due to splitting of mesoderm is called Schizocoelous coelome.

Question No. 30 - How does transport of gases may take place in Arthropods?

Answer No. 30 - Most arthropods possess an extensive system formed of air tubes called trachea for the exchange of gases. Many tracheal tubes open to the exterior through opening called spiracles.

Question No. 31 - Define the term protandrous and gemmule.

Answer No. 31 - Protandrous mean male sex cell mature first.
Internal buds of sponges are called gemmules.

Question No. 32 - Define spongocoel.

Answer No. 32 - There is a single cavity inside the body of sponges, the spongocoel. In most sponges the spongocoel may be divided into flagellated chambers or canals, lined by flagellated choanocytes.

Question No. 33 - What are series of protostomia?

Answer No. 33 - Protostomia series include phylum aschelminthes, annelid, mollusca and arthropoda.

Question No. 34 - How insects are beneficial to man?

Answer No. 34 - Insect plays an important role in pollination
1. They provide us Honey.
2. Many insects are source of wax.
3. Silk worm provide silk thread.

Question No. 35 - What is flame cell? Write its function.

Answer No. 35 - The excretory organ of platyhelminthes are called flame cell. Its consists of branching tube ending in bulb like cell called flame cell.

Question No. 36 - What is blastocoel?

Answer No. 36 - In early embryonic development a fluid filled cacity which develops in the mass of cell formed at blastula stage is called blastocoel.

Question No. 37 - What are fundamental features of insects?

Answer No. 37 - Insects have joint legs,two pairs of wings and three pairs of legs and body is segmented which is divided into three parts called head, thorax and abdomen.

Question No. 38 - What is polymorphism in Coelenterata?

Answer No. 38 - The occurrence of structure and functionally more than two different forms of individual called zooids within same organism is called polymorphism, e.g in Obelia there are feeding individual,the gastrozooids, the individual capable of asexual reproduction only the gonozooids and the free living sexuallt reproducinh indivuals the medusae.

Question No. 39 - Differentiate between protostome and deuterostome.

Answer No. 39 - Protostome : Cleavage of the zygote is spiral or determinate.
Mesoderm is derived from cells on lips of blastopore.

Question No. 40 - Define ecdysis.

Answer No. 40 - The process in which arthropods shed their older exoskeleton and form a new exoskeleton this process is called ecdysis.

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