Unit 4 Plant Form And Function

Question 1

The oldest, structurally simplest and most abundant life forms on earth are

Answer 1

Bacteria

Question 2

Non-photosynthetic bacteria are

Answer 2

Unicellular and spheres, straight or curved rods,long chains or filaments

Question 3

Bacilli are

Answer 3

Straight or rod shaped bacteria of approximately 1-5um x 0.5-10um in size

Question 4

Spherical/round bacteria are called

Answer 4

Cocci and are about 0.5-1.0um in diameter

Question 5

Spirilla are

Answer 5

Long and helical shaped also called spirochetes

Question 6

Short curved rods are called

Answer 6

Vibrios

Question 7

Cyanobacteria are _______

Answer 7

Photosynthetic
Could be single celled, filamentous or simple colonies

Question 8

Only which organelle is present in prokaryotes

Answer 8

Ribosomes

Question 9

Eukaryotic cells are _____ times larger than prokaryotic cells

Answer 9

Ten times

Question 10

A structure that helps cells maintain their shape and internal organisation is

Answer 10

Cytoskeleton

Question 11

Prokaryotic Flagella ___________ while eukaryotic Flagella have _________

Answer 11

Spin like propellers and whip like motion respectively

Question 12

Non photosynthetic eukaryotes include

Answer 12

Slime molds and fungi

Question 13

Slime molds reproduce by

Answer 13

Spores

Question 14

Slime molds wall less assimilative body may be

Answer 14

Uninucleate or multinucleat

Question 14

Slime molds wall less assimilative body may be

Answer 14

Uninucleate or multinucleat

Question 15

Mass of fine tubular branching threads in fungi are called

Answer 15

Hyphae

Question 16

The whole mass of thread in fungi is called

Answer 16

Mycelium

Question 17

Protoplasm of fungi is either continuous of interrupted at intervals by _____

Answer 17

Crosswalls called septa or septum

Question 18

Fungi with crosswalls are called___1__ while those without are called _____2____

Answer 18

1 septate eg penicillium sp
2 non-septate, aseptate of coenocytic eg mucor sp

Question 19

Penicillin acts by

Answer 19

Killing bacteria directly of inhibiting their growth

Question 20

Saccharomyces cerevisiae causes bread to rise by

Answer 20

Releasing CO2 which gets trapped in the dough

Question 21

Plant body of filamentous fungi is

Answer 21

Haploid and differentiated into vertical and horizontal axes

Question 22

Horizontal hypae lie on

Answer 22

Substrate and produce sporangiophore at intervals

Question 23

Rhizoids penetrate the _____

Answer 23

Substratum and aid anchorage and nutrient absorption

Question 24

Examples of complex fungi are

Answer 24

Mushrooms, toadstool and puff balss

Question 25

When hyphal cells become greatly expanded a tissue resembling ______ of higher plants results

Answer 25

Parenchyma

Question 26

Nutrients are stored in hyphal walls as

Answer 26

Glycogen

Question 27

Non vascular photosynthetic eukaryotes are called

Answer 27

Eukaryotic algae and bryophytes

Question 28

Pigmentation in chrysophyta is brought about by

Answer 28

Predominance of carotenoids

Question 29

Chloroplast of _____ have 3 membranes instead of 2

Answer 29

Chrysophyta

Question 30

Among members of chrysophyta, there is a morphological seperation into

Answer 30

Centric and pinnate forms

Question 31

Motile and non motile unicellular forms of chlorophyta are _________&________

Answer 31

Chlamydomonas and chlorella respectively

Question 32

Colonial forms of chlorophyta are held together by

Answer 32

Mucilaginous matrix Motile (volvox) Non motile (scenedesmus sp)

Question 33

Filamentous forms of green algae include

Answer 33

Oedogonium sp and spirogyra

Question 34

Algae that have structures resembling leaves stem and roots are

Answer 34

Phaeophyta(brown algae) Lamina blade (leaf like) Stipe (stem like) Attachment part (holdfast) Haptera (root like)

Question 35

Examples of brown algae are

Answer 35

Fucus sp Laminaria sp

Question 36

Phaeophyta range from

Answer 36

Microscopic filamentous forms to massive plants that are 50m or more in length

Question 37

The largest sea plant is

Answer 37

Macrocystis ie kelps

Question 38

Red algae are divided into

Answer 38

Bangiophyceae Florideophyceae

Question 39

Xtics of bangiophyceae

Answer 39

Simplest is unicellular thallus (cyanidium sp) Filamentous (bangia sp) Erect or prostrate Uniseriate or multiseriate Branched or unbranched Ma

Question 40

Xtics of florideophyceae

Answer 40

Simple Uniseriate branched forms (polysiphonia sp) Comples pseudoparenchymatousthallus (nemalion sp)

Question 41

What is pseudoparenchymatousthallus

Answer 41

A tissue that superficially resembles plant parenchyma but is an interwoven mass of hyphae in fungi or filaments in algae